7th Class Mathematics Algebraic Expressions - 854 Question Bank Algebraic Expressions and Linear Equation

  • question_answer How much is \[\mathbf{5}{{\mathbf{x}}^{\mathbf{5}}}{{\mathbf{y}}^{\mathbf{4}}}{{\mathbf{z}}^{\mathbf{3}}}\mathbf{- 3}{{\mathbf{x}}^{\mathbf{2}}}{{\mathbf{y}}^{\mathbf{4}}}{{\mathbf{z}}^{\mathbf{3}}}\mathbf{+ 2}{{\mathbf{x}}^{\mathbf{2}}}\mathbf{y}{{\mathbf{z}}^{\mathbf{3}}}\] less than \[\mathbf{8}{{\mathbf{z}}^{\mathbf{3}}}{{\mathbf{x}}^{\mathbf{2}}}{{\mathbf{y}}^{\mathbf{4}}}\mathbf{-12y}{{\mathbf{x}}^{\mathbf{2}}}{{\mathbf{z}}^{\mathbf{3}}}\mathbf{-3}{{\mathbf{z}}^{\mathbf{3}}}{{\mathbf{y}}^{\mathbf{4}}}{{\mathbf{x}}^{\mathbf{5}}}\]

    A) \[4{{x}^{2}}{{z}^{3}}{{y}^{4}}-14{{x}^{2}}{{z}^{3}}y+8{{z}^{3}}{{x}^{5}}{{y}^{4}}\]

    B)  \[5{{x}^{2}}{{y}^{4}}{{z}^{3}}-\text{ }10y{{x}^{2}}{{z}^{3}}-2{{x}^{5}}{{y}^{4}}{{z}^{3}}\]

    C)  \[5{{x}^{2}}{{y}^{4}}{{z}^{3}}-\text{ }14y{{x}^{2}}{{z}^{3}}-8{{x}^{3}}{{y}^{5}}{{z}^{4}}\]

    D)  \[11{{x}^{2}}{{y}^{4}}{{z}^{3}}-14y{{x}^{2}}{{z}^{3}}-8{{z}^{3}}{{x}^{5}}{{y}^{4}}\]

    E)  None of these

    Correct Answer: D


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