SAT Math Practice Question #31405 - SATify | SATify

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SAT Math Practice Question #31405 - SATify | SATify

#31405

expressions

algebra

hard

120 sec

If $a = x - 2$ and $b = 2 x + 1$ , which of the following is equivalent to $a^{2} - ab + 3 b$ ?

A.

$- x^{2} + 5 x + 9$

B.

$- x^{2} + 3 x + 5$

C.

$x^{2} + 5 x + 9$

D.

$x^{2} + 3 x + 5$