SAT Math Practice Question #14147 - SATify | SATify

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SAT Math Practice Question #14147 - SATify | SATify

#14147

equations

radicals

hard

75 sec

$\frac{y ^{2}}{y ^{2} - k ^{2}} = \frac{k ^{2}}{y ^{2} - k ^{2}} + 25$
In the given equation, $k$ is a positive constant. Which of the following is one of the solutions to the given equation?

A.

$k^{2} + 625$

B.

$k$

C.

$- 2 5^{2} - k^{2}$

D.

$- k^{2} - 625$