SAT Math Practice Question #15259 - SATify | SATify

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SAT Math Practice Question #15259 - SATify | SATify

#15259

algebra

expressions

easy

45 sec

Which expression is equivalent to $7 a^{7} + 14 a^{5} - 21 a^{3}$ ?

A.

$7 a^{5} (a^{2} + 2)$

B.

$a^{3} (7 a^{4} + 14 a^{2} - 21)$

C.

$7 a^{3} (a^{4} + 2 a^{2} - 3)$

D.

$7 a^{3} (a^{4} + 2 a^{2} + 3)$