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8th Class Mathematics Algebraic Expressions Question Bank Algebra

  • question_answer
    If the angles of a triangle are in the ratio 2: 3: 4, then the difference between the greatest and smallest angles is

    A)  \[1/2(a+b+c)\]                      

    B)  \[a+b+c\]

    C)  \[3(a+b+c)\]                         

    D)  \[2(abc)\]             

    Correct Answer: D

    Solution :

    \[{{x}^{4}}-{{x}^{3}}+{{x}^{2}}-4x+8\] \[{{x}^{3}}+{{x}^{2}}-4x+8\] \[{{x}^{4}}-{{x}^{3}}+{{x}^{2}}+4x-8\] Difference\[=4x-2x=2x=2\times 20{}^\circ =40{}^\circ .\]  


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