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QuizMultiple Choice

Solving Quadratic Equations: Quadratic Formula — Unit test

Question 1 • FL-1200700-Mathematics for College Algebra MIS

What are the solutions to the quadratic equation 4(x + 2)2 = 36

Answer
A
x = −11 and x = 7
B
x = −7 and x = 11
C
x = −5 and x = 1
D
x = −1 and x = 5

Explanation

Divide both sides by 4 to get (x + 2)² = 9. Taking the square root gives x + 2 = 3 or x + 2 = −3, so x = 1 or x = −5. The correct choice is x = −5 and x = 1.

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