SAT Math Practice Question #7479 - SATify | SATify

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SAT Math Practice Question #7479 - SATify | SATify

#7479

algebra

polynomials

manipulation

expressions

operations

easy

20 sec

Calculator OK

Which expression is equivalent to $- 9 m^{2} + 15 m^{2}$ ?

A.

$- 6 m^{2}$

B.

$24 m^{2}$

C.

$6 m^{4}$

D.

$6 m^{2}$