SAT Math Practice Question #26302 - SATify | SATify

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SAT Math Practice Question #26302 - SATify | SATify

#26302

algebra

functions

easy

90 sec

Define $x $ y = x^{2} - x y$ and $x & y = x^{2} - y^{2} + x y$ . What is $\frac{4 $ 2}{4 & 2}$ ?

A.

$\frac{1}{2}$

B.

$\frac{2}{5}$

C.

$- \frac{1}{2}$

D.

$\frac{4}{5}$

E.

$1$