Question

Simplify the expression using the properties of exponents:
(3a^2)(2a^-1)^2
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(15b^3)(2b^-2)

Answer 1

\[{{(3a²)(2a^{-1})^2 \over (15b³)(2b^{-2})}}={{3a^2 \times 4a^{-2}} \over 30b}={12a^0 \over 30b} = {2 \over 5b}\]