SAT Math Practice Question #25898 - SATify | SATify

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SAT Math Practice Question #25898 - SATify | SATify

#25898

algebra

Calculus

medium

120 sec

Real numbers $x$ and $y$ satisfy the equation $x^{2} + y^{2} = - 4 x + 8 y - 20$ . What is $x - y$ ?

A.

-8

B.

-6

C.

-4

D.

2

E.

6