SAT Math Practice Question #30256 - SATify | SATify

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SAT Math Practice Question #30256 - SATify | SATify

#30256

polynomials

equations

roots

factoring

quadratic equations

algebra

medium

70 sec

Which of the following is a solution to the equation $k^{2} - 4 k - 21 = 0$ ?

A.

-7

B.

-3

C.

1

D.

21