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8th Class Mathematics Algebraic Expressions Question Bank Algebra

  • question_answer
    If \[{{x}^{2}}+\frac{1}{{{x}^{2}}}\] and \[{{a}^{2}}+{{b}^{2}}+2\] then the value of \[(ab+bc+ca)\] is

    A) 27            

    B) 29

    C) 495                             

    D) 729

    Correct Answer: A

    Solution :

    \[\left( 2,-\frac{3}{4} \right)\] Squaring on both sides, we get \[(5,4)\] \[(-8,0)\] \[\left( -\frac{4}{3},2 \right)\] \[\frac{x}{x-1}+\frac{x-1}{x}=2\frac{1}{2}\] \[(5,4)\] \[(5,-4)\] \[(1,2)\] \[(-1,2)\] \[P(x)={{a}_{0}}+{{a}_{1}}x+{{a}_{2}}{{x}^{2}}+.....+{{a}_{n}}{{x}^{n}}\]          


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