x2 + 4x - 20 = 0
x2 + x + 20 = 0
x2 - x + 20 = 0
x2 + x - 20 = 0
x2 - x - 20 = 0
Correct answer is D
(x - 4)(x + 5) = 0
x2 + 5x - 4x - 20 = 0
x2 + x - 20 = 0
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