Solve the quadratic equation. (x - 7)^2 = 81 A) x = 2 or -7 B) x = -16 or 2 C) x = 16 or -2 D) x = ±7

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asked Jun 12, 2019 56.4k views

1 Answer

Jaay · Answer 1 · 2019-06-18T17:59:15+0000

$x - 7 = \pm √(81)$

$x - 7 = \pm 9$

$x = 9 + 7 \ \ or \ x = -9 + 7$

$x = 16 \ \ or \ x = -2$

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Answer: x = 16 or x = -2 ( Answer C)
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Solve the quadratic equation. (x - 7)^2 = 81 A) x = 2 or -7 B) x = -16 or 2 C) x = 16 or -2 D) x = ±7

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