8th Class Mathematics Algebraic Expressions Question Bank Algebra

  • question_answer
    \[3(3-y)-2y=4\] of a flagpole is black, \[9-3y-2y=4\] is white and the remaining three meters is painted yellow. Find the length of the flagpole.

    A)  \[\Rightarrow \]            

    B)  \[-5y=-5\]

    C) 5km                

    D) None of these

    Correct Answer: A

    Solution :

    Let the length of the flagpole \[=x\,m.\] \[=\frac{{{a}^{3}}-3ab}{{{b}^{3}}}\] \[x+\underset{1+\frac{1}{x}}{\mathop{\underset{1+\overset{1}{\mathop{\_\_\_\_\_}}\,}{\mathop{\overset{1}{\mathop{\_\_\_\_}}\,}}\,}}\,=\frac{1}{2}+\overset{1}{\mathop{\underset{\underset{1+\frac{1}{\frac{1}{2}}}{\mathop{1+\overset{1}{\mathop{\_\_\_\_\_}}\,}}\,}{\mathop{\_\_\_\_\_}}\,}}\,\] \[=\frac{1}{2}+\underset{1+\frac{1}{1+2}}{\mathop{\overset{1}{\mathop{\_\_\_\_\_}}\,}}\,=\frac{1}{2}+\underset{1+\frac{1}{3}}{\mathop{\overset{1}{\mathop{\_\_\_\_}}\,}}\,=\frac{1}{2}+\frac{1}{\frac{4}{3}}\]               


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