SAT Math Practice Question #25456 - SATify | SATify

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SAT Math Practice Question #25456 - SATify | SATify

#25456

algebra

completing the square

Calculus

medium

90 sec

Real numbers $x$ and $y$ satisfy the equation $x^{2} + y^{2} = - 2 x + 14 y - 50$ . What is the product $x y$ ?

A.

-10

B.

-7

C.

-5

D.

3

E.

7