Solving Quadratic Equations: Completing the Square — Unit test
Question 2 • Algebra III A
What are the solutions to x2 + 8x + 7 = 0?
Answer
A
x = –8 and x = –7
B
x = –7 and x = –1
C
x = 1 and x = 7
D
x = 7 and x = 8
Explanation
Factor the quadratic: x² + 8x + 7 = (x + 1)(x + 7). Setting each factor equal to zero gives x = −1 or x = −7. Therefore, the correct choice is B, x = −7 and x = −1.
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