SAT Math Practice Question #20491 - SATify | SATify

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SAT Math Practice Question #20491 - SATify | SATify

#20491

algebra

expressions

easy

60 sec

Calculator OK

Which expression is equivalent to $(6 z^{3} - 4 z + 9) - (2 z^{3} + z - 1)$ ?

A.

$4 z^{3} - 10 z + 10$

B.

$4 z^{3} - 5 z + 10$

C.

$2 z^{3} - 15 z + 10$

D.

$9 z^{2} + 10$