SAT Math Multiple Choice Practice Question 305: Answer and Explanation

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Question: 305

19. If is a solution of the equation where c is a constant, what is another value of x that satisfies the equation?

A. -5
B. -2
C. 1
D. 2
E. 5

Correct Answer: E


E Substitute into the equation to find c.

Factor the quadratic (remember that since is a solution, (x + 1) must be a factor):

So the solutions are and

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