SAT Math Practice Question #25704 - SATify | SATify

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SAT Math Practice Question #25704 - SATify | SATify

#25704

algebra

easy

60 sec

For real numbers $a$ and $b$ , define $a * b = (a - b)^{2}$ . What is $(x^{2} + 1) * (x^{2} - 1)$ ?

A.

$0$

B.

$2$

C.

$4$

D.

$2 x^{2}$

E.

$4 x^{2}$