SAT Math Practice Question #7520 - SATify | SATify

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SAT Math Practice Question #7520 - SATify | SATify

#7520

algebra

expressions

simplification

operations

exponents

easy

25 sec

Calculator OK

Which expression is equivalent to $3 (a^{6} b^{- 2}) (2 a^{- 1} b^{4})$ , where $a$ and $b$ are positive?

A.

$5 a^{5} b^{2}$

B.

$6 a^{5} b^{2}$

C.

$6 a^{- 6} b^{- 8}$

D.

$5 a^{- 6} b^{8}$