Question 7 • FL-1200710-Mathematics for College Algebra A
An equation true for both x = −6 and x = 2 must have those values as roots. The corresponding factors are (x + 6) and (x − 2), which multiply to x² + 4x − 12. Choice B is 2 times that expression: 2x² + 8x − 24 = 0, so it equals zero at both values.
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