Simplify the expression a − 11 ∗ a 4 a − 3 and find its value at a = − 1 2 . Write down the resulting number in your answer.

Question

Simplify the expression                     a                  −          11                    ∗              a                  4                            a              −        3             and find its value at   a  =  −      1    2  . Write down the resulting number in your answer.

Monserrat Ellison · Accepted Answer

a                  −          11                    ∗              a                  4                            a              −        3              =            a              −        11        +        4                    a              −        3              =      a          −      7      −      (      −      3      )        =      a          −      4        =  (  −      1    2        )          −      4        =  (  −  2      )          4        =  16

Simplify the expression (a^(-11)*a^(4))/(a^(-3)) and find its value at a=-1/2. Write down the resulting number in your answer.

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