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8.5E: Mazoezi

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    Mazoezi hufanya kamili

    Zoezi A: ongeza na uondoe maneno makubwa

    Katika mazoezi yafuatayo, kurahisisha. Fikiria vigezo vyote ni kubwa kuliko au sawa na sifuri ili maadili kamili hayahitajiki.

    1. a.\(8 \sqrt{2}-5 \sqrt{2}\quad\) b.\(5 \sqrt[3]{m}+2 \sqrt[3]{m}\quad\) c.\(8 \sqrt[4]{m}-2 \sqrt[4]{n}\)

    2. a.\(7 \sqrt{2}-3 \sqrt{2}\quad\) b.\(7 \sqrt[3]{p}+2 \sqrt[3]{p}\quad\) c.\(5 \sqrt[3]{x}-3 \sqrt[3]{x}\)

    3. a.\(3 \sqrt{5}+6 \sqrt{5}\quad\) b.\(9 \sqrt[3]{a}+3 \sqrt[3]{a}\quad\) c.\(5 \sqrt[4]{2 z}+\sqrt[4]{2 z}\)

    4. a.\(4 \sqrt{5}+8 \sqrt{5} \quad \) b.\(\sqrt[3]{m}-4 \sqrt[3]{m} \quad \) c.\(\sqrt{n}+3 \sqrt{n}\)

    5. a.\(3 \sqrt{2 a}-4 \sqrt{2 a}+5 \sqrt{2 a} \quad \) b.\(5 \sqrt[4]{3 a b}-3 \sqrt[4]{3 a b}-2 \sqrt[4]{3 a b}\)

    6. a.\(\sqrt{11 b}-5 \sqrt{11 b}+3 \sqrt{11 b} \quad \) b.\(8 \sqrt[4]{11 c d}+5 \sqrt[4]{11 c d}-9 \sqrt[4]{11 c d}\)

    7. a.\(8 \sqrt{3 c}+2 \sqrt{3 c}-9 \sqrt{3 c} \quad \) b.\(2 \sqrt[3]{4 p q}-5 \sqrt[3]{4 p q}+4 \sqrt[3]{4 p q}\)

    8. a.\(3 \sqrt{5 d}+8 \sqrt{5 d}-11 \sqrt{5 d} \quad \) b.\(11 \sqrt[3]{2 r s}-9 \sqrt[3]{2 r s}+3 \sqrt[3]{2 r s}\)

    9. a.\(\sqrt{27}-\sqrt{75} \quad \) b.\(\sqrt[3]{40}-\sqrt[3]{320} \quad \) c.\(\frac{1}{2} \sqrt[4]{32}+\frac{2}{3} \sqrt[4]{162}\)

    10. a.\(\sqrt{72}-\sqrt{98} \quad \) b.\(\sqrt[3]{24}+\sqrt[3]{81} \quad \) c.\(\frac{1}{2} \sqrt[4]{80}-\frac{2}{3} \sqrt[4]{405}\)

    11. a.\(\sqrt{48}+\sqrt{27} \quad \) b.\(\sqrt[3]{54}+\sqrt[3]{128} \quad \) c.\(6 \sqrt[4]{5}-\frac{3}{2} \sqrt[4]{320}\)

    12. a.\(\sqrt{45}+\sqrt{80} \quad \) b.\(\sqrt[3]{81}-\sqrt[3]{192} \quad \) c.\(\frac{5}{2} \sqrt[4]{80}+\frac{7}{3} \sqrt[4]{405}\)

    13. a.\(\sqrt{72 a^{5}}-\sqrt{50 a^{5}} \quad \) b.\(9 \sqrt[4]{80 p^{4}}-6 \sqrt[4]{405 p^{4}}\)

    14. a.\(\sqrt{48 b^{5}}-\sqrt{75 b^{5}} \quad \) b.\(8 \sqrt[3]{64 q^{6}}-3 \sqrt[3]{125 q^{6}}\)

    15. a.\(\sqrt{80 c^{7}}-\sqrt{20 c^{7}} \quad \) b.\(2 \sqrt[4]{162 r^{10}}+4 \sqrt[4]{32 r^{10}}\)

    16. a.\(\sqrt{96 d^{9}}-\sqrt{24 d^{9}} \quad \) b.\(5 \sqrt[4]{243 s^{6}}+2 \sqrt[4]{3 s^{6}}\)

    17. \(3 \sqrt{128 y^{2}}+4 y \sqrt{162}-8 \sqrt{98 y^{2}}\)

    18. \(3 \sqrt{75 y^{2}}+8 y \sqrt{48}-\sqrt{300 y^{2}}\)
    Jibu

    1. a.\(3 \sqrt{2}\) b.\(7 \sqrt[3]{m}\) c.\(6 \sqrt[4]{m}\)

    3. a.\(9 \sqrt{5}\) b.\(12 \sqrt[3]{a}\) c.\(6 \sqrt[4]{2 z}\)

    5. a.\(4 \sqrt{2 a}\) b.\(0\)

    7. a.\( \sqrt{3c}\) b.\(\sqrt[3]{4 p q}\)

    9. a.\(-2 \sqrt{3}\) b.\(-2 \sqrt[3]{5}\) c.\(3 \sqrt[4]{2}\)

    11. a.\(7 \sqrt{3}\) b.\(7 \sqrt[3]{2}\) c.\(3 \sqrt[4]{5}\)

    13. a.\(a^{2} \sqrt{2 a}\) b.\(0\)

    15. a.\(2 c^{3} \sqrt{5 c}\) b.\(14 r^{2} \sqrt[4]{2 r^{2}}\)

    17. \(4 y \sqrt{2}\)

    Zoezi B: kuzidisha maneno makubwa

    Katika mazoezi yafuatayo, kurahisisha.

      1. \((-2 \sqrt{3})(3 \sqrt{18})\)

      2. \((8 \sqrt[3]{4})(-4 \sqrt[3]{18})\)



      3.  

      1. \((-4 \sqrt{5})(5 \sqrt{10})\)

      2. \((-2 \sqrt[3]{9})(7 \sqrt[3]{9})\)



      3.  

      1. \((5 \sqrt{6})(-\sqrt{12})\)

      2. \((-2 \sqrt[4]{18})(-\sqrt[4]{9})\)



      3.  

      1. \((-2 \sqrt{7})(-2 \sqrt{14})\)

      2. \((-3 \sqrt[4]{8})(-5 \sqrt[4]{6})\)



      3.  

      1. \(\left(4 \sqrt{12 z^{3}}\right)(3 \sqrt{9 z})\)

      2. \(\left(5 \sqrt[3]{3 x^{3}}\right)\left(3 \sqrt[3]{18 x^{3}}\right)\)



      3.  

      1. \(\left(3 \sqrt{2 x^{3}}\right)\left(7 \sqrt{18 x^{2}}\right)\)

      2. \(\left(-6 \sqrt[3]{20 a^{2}}\right)\left(-2 \sqrt[3]{16 a^{3}}\right)\)



      3.  

      1. \(\left(-2 \sqrt{7 z^{3}}\right)\left(3 \sqrt{14 z^{8}}\right)\)

      2. \(\left(2 \sqrt[4]{8 y^{2}}\right)\left(-2 \sqrt[4]{12 y^{3}}\right)\)



      3.  

      1. \(\left(4 \sqrt{2 k^{5}}\right)\left(-3 \sqrt{32 k^{6}}\right)\)

      2. \(\left(-\sqrt[4]{6 b^{3}}\right)\left(3 \sqrt[4]{8 b^{3}}\right)\)



      3.  
    Jibu

    1.

    1. \(-18 \sqrt{6}\)

    2. \(-64 \sqrt[3]{9}\)



    3.  

    3.

    1. \(-30 \sqrt{2}\)

    2. \(6 \sqrt[4]{2}\)



    3.  

    5.

    1. \(72 z^{2} \sqrt{3}\)

    2. \(45 x^{2} \sqrt[3]{2}\)



    3.  

    7.

    1. \(-42 z^{5} \sqrt{2 z}\)

    2. \(-8 y \sqrt[4]{6 y}\)
    Zoezi C: tumia kuzidisha kwa polynomial ili kuzidisha maneno makubwa

    Katika mazoezi yafuatayo, ongeze.

      1. \(\sqrt{7}(5+2 \sqrt{7})\)

      2. \(\sqrt[3]{6}(4+\sqrt[3]{18})\)



      3.  

      1. \(\sqrt{11}(8+4 \sqrt{11})\)

      2. \(\sqrt[3]{3}(\sqrt[3]{9}+\sqrt[3]{18})\)



      3.  

      1. \(\sqrt{11}(-3+4 \sqrt{11})\)

      2. \(\sqrt[4]{3}(\sqrt[4]{54}+\sqrt[4]{18})\)



      3.  

      1. \(\sqrt{2}(-5+9 \sqrt{2})\)

      2. \(\sqrt[4]{2}(\sqrt[4]{12}+\sqrt[4]{24})\)



      3.  

    5. \((7+\sqrt{3})(9-\sqrt{3})\)

    6. \((8-\sqrt{2})(3+\sqrt{2})\)

      1. \((9-3 \sqrt{2})(6+4 \sqrt{2})\)

      2. \((\sqrt[3]{x}-3)(\sqrt[3]{x}+1)\)



      3.  

      1. \((3-2 \sqrt{7})(5-4 \sqrt{7})\)

      2. \((\sqrt[3]{x}-5)(\sqrt[3]{x}-3)\)



      3.  

      1. \((1+3 \sqrt{10})(5-2 \sqrt{10})\)

      2. \((2 \sqrt[3]{x}+6)(\sqrt[3]{x}+1)\)



      3.  

      1. \((7-2 \sqrt{5})(4+9 \sqrt{5})\)

      2. \((3 \sqrt[3]{x}+2)(\sqrt[3]{x}-2)\)



      3.  

    11. \((\sqrt{3}+\sqrt{10})(\sqrt{3}+2 \sqrt{10})\)

    12. \((\sqrt{11}+\sqrt{5})(\sqrt{11}+6 \sqrt{5})\)

    13. \((2 \sqrt{7}-5 \sqrt{11})(4 \sqrt{7}+9 \sqrt{11})\)

    14. \((4 \sqrt{6}+7 \sqrt{13})(8 \sqrt{6}-3 \sqrt{13})\)

      1. \((3+\sqrt{5})^{2}\)

      2. \((2-5 \sqrt{3})^{2}\)



      3.  

      1. \((4+\sqrt{11})^{2}\)

      2. \((3-2 \sqrt{5})^{2}\)



      3.  

      1. \((9-\sqrt{6})^{2}\)

      2. \((10+3 \sqrt{7})^{2}\)



      3.  

      1. \((5-\sqrt{10})^{2}\)

      2. \((8+3 \sqrt{2})^{2}\)



      3.  

    19. \((4+\sqrt{2})(4-\sqrt{2})\)

    20. \((7+\sqrt{10})(7-\sqrt{10})\)

    21. \((4+9 \sqrt{3})(4-9 \sqrt{3})\)

    22. \((1+8 \sqrt{2})(1-8 \sqrt{2})\)

    23. \((12-5 \sqrt{5})(12+5 \sqrt{5})\)

    24. \((9-4 \sqrt{3})(9+4 \sqrt{3})\)

    25. \((\sqrt[3]{3 x}+2)(\sqrt[3]{3 x}-2)\)

    26. \((\sqrt[3]{4 x}+3)(\sqrt[3]{4 x}-3)\)
    Jibu

    1.

    1. \(14+5 \sqrt{7}\)

    2. \(4 \sqrt[3]{6}+3 \sqrt[3]{4}\)



    3.  

    3.

    1. \(44-3 \sqrt{11}\)

    2. \(3 \sqrt[4]{2}+\sqrt[4]{54}\)



    3.  

    5. \(60+2 \sqrt{3}\)

    7.

    1. \(30+18 \sqrt{2}\)

    2. \(\sqrt[3]{x^{2}}-2 \sqrt[3]{x}-3\)



    3.  

    9.

    1. \(-54+13 \sqrt{10}\)

    2. \(2 \sqrt[3]{x^{2}}+8 \sqrt[3]{x}+6\)



    3.  

    11. \(23+3 \sqrt{30}\)

    13. \(-439-2 \sqrt{77}\)

    15.

    1. \(14+6 \sqrt{5}\)

    2. \(79-20 \sqrt{3}\)

    17.

    1. \(87-18 \sqrt{6}\)

    2. \(163+60 \sqrt{7}\)

    19. \(14\)

    21. \(-227\)

    23. \(19\)

    25. \(\sqrt[3]{9 x^{2}}-4\)

    Zoezi D: mazoezi mchanganyiko
    1. \(\frac{2}{3} \sqrt{27}+\frac{3}{4} \sqrt{48}\)

    2. \(\sqrt{175 k^{4}}-\sqrt{63 k^{4}}\)

    3. \(\frac{5}{6} \sqrt{162}+\frac{3}{16} \sqrt{128}\)

    4. \(\sqrt[3]{24}+\sqrt[3]{ 81}\)

    5. \(\frac{1}{2} \sqrt[4]{80}-\frac{2}{3} \sqrt[4]{405}\)

    6. \(8 \sqrt[4]{13}-4 \sqrt[4]{13}-3 \sqrt[4]{13}\)

    7. \(5 \sqrt{12 c^{4}}-3 \sqrt{27 c^{6}}\)

    8. \(\sqrt{80 a^{5}}-\sqrt{45 a^{5}}\)

    9. \(\frac{3}{5} \sqrt{75}-\frac{1}{4} \sqrt{48}\)

    10. \(21 \sqrt[3]{9}-2 \sqrt[3]{9}\)

    11. \(8 \sqrt[3]{64 q^{6}}-3 \sqrt[3]{125 q^{6}}\)

    12. \(11 \sqrt{11}-10 \sqrt{11}\)

    13. \(\sqrt{3} \cdot \sqrt{21}\)

    14. \((4 \sqrt{6})(-\sqrt{18})\)

    15. \((7 \sqrt[3]{4})(-3 \sqrt[3]{18})\)

    16. \(\left(4 \sqrt{12 x^{5}}\right)\left(2 \sqrt{6 x^{3}}\right)\)

    17. \((\sqrt{29})^{2}\)

    18. \((-4 \sqrt{17})(-3 \sqrt{17})\)

    19. \((-4+\sqrt{17})(-3+\sqrt{17})\)

    20. \(\left(3 \sqrt[4]{8 a^{2}}\right)\left(\sqrt[4]{12 a^{3}}\right)\)

    21. \((6-3 \sqrt{2})^{2}\)

    22. \(\sqrt{3}(4-3 \sqrt{3})\)

    23. \(\sqrt[3]{3}(2 \sqrt[3]{9}+\sqrt[3]{18})\)

    24. \((\sqrt{6}+\sqrt{3})(\sqrt{6}+6 \sqrt{3})\)
    Jibu

    1. \(5\sqrt{3}\)

    3. \(9\sqrt{2}\)

    5. \(-\sqrt[4]{5}\)

    7. \(10 c^{2} \sqrt{3}-9 c^{3} \sqrt{3}\)

    9. \(2 \sqrt{3}\)

    11. \(17 q^{2}\)

    13. \(3 \sqrt{7}\)

    15. \(-42 \sqrt[3]{9}\)

    17. \(29\)

    19. \(29-7 \sqrt{17}\)

    21. \(72-36 \sqrt{2}\)

    23. \(6+3 \sqrt[3]{2}\)

    Zoezi E: mazoezi ya kuandika
    1. Eleza wakati kujieleza kwa kasi ni katika fomu rahisi.
    2. Eleza mchakato wa kuamua kama radicals mbili ni kama au tofauti. Hakikisha jibu lako lina maana kwa radicals zenye namba zote mbili na vigezo.
      1. Eleza kwa nini daima\((-\sqrt{n})^{2}\) sio hasi, kwa\(n \geq 0\).
      2. Eleza kwa nini daima\(-(\sqrt{n})^{2}\) sio chanya, kwa\(n \geq 0\).
    4. Tumia muundo wa mraba wa binomial ili kurahisisha\((3+\sqrt{2})^{2}\). Eleza hatua zako zote.
    Jibu

    1. Majibu yatatofautiana

    3. Majibu yatatofautiana

    Self Check

    Baada ya kukamilisha mazoezi, tumia orodha hii ili kutathmini ujuzi wako wa malengo ya sehemu hii.

    Jedwali hili lina safu 3 na nguzo 4. Mstari wa kwanza ni mstari wa kichwa na huandika kila safu. Kichwa cha kwanza cha safu ni â € naweza â € €, pili ni â € € confidentlyâ €, ya tatu ni â € € na baadhi ya msaada â € €, na ya nne ni â € no, mimi donâ €™ t kupata hiyo €. Chini ya safu ya kwanza ni maneno â € kuongeza na kuondoa expressions radical.â €, â € kuzidisha expressions radical â €, na â € € kutumia kuzidisha polynomial kuzidisha expressions radical â €. Nguzo nyingine zimeachwa tupu ili mwanafunzi aweze kuonyesha kiwango chao cha ustadi kwa kila mada.
    Kielelezo 8.4.14

    b Kwa kiwango cha 1-10, ungewezaje kupima ujuzi wako wa sehemu hii kwa kuzingatia majibu yako kwenye orodha? Unawezaje kuboresha hii?