8th Class Mathematics Factorisation Question Bank Factorisation

  • question_answer
    Divide \[(32{{x}^{4}}{{y}^{3}}-16{{x}^{3}}{{y}^{4}})\] by \[(-8{{x}^{2}}y)\]

    A) \[4{{x}^{3}}{{y}^{2}}+2x{{y}^{3}}\]           

    B)  \[4{{x}^{3}}y-2x{{y}^{3}}\]      

    C)  \[-4{{x}^{2}}{{y}^{2}}+2x{{y}^{3}}\]

    D)         \[-4x{{y}^{2}}+2x{{y}^{3}}\]   

    Correct Answer: C

    Solution :

    \[\frac{32{{x}^{4}}{{y}^{3}}-16{{x}^{3}}{{y}^{4}}}{-8{{x}^{2}}y}=\frac{32{{x}^{4}}{{y}^{3}}}{-8{{x}^{2}}y}+\frac{16{{x}^{3}}{{y}^{4}}}{8{{x}^{2}}y}\] \[=-4{{x}^{2}}{{y}^{2}}+2x{{y}^{3}}\]


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