Solve the following quadratic equation by the square root property of equality.

2 (x + 7) 2 = 64

Question

Jorden Burton

11 November, 00:54

+4

Answers (2)

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Brett Kirk · Answer 1

2 (x+7) ^2 = 64

2 (x+7) = + 8/-8

2 (x+7) = (+8) 2 (x+7) = (-8)

x+7 = (+4) x+7 = (-4)

x = (+4) - 7 x = (-4) - 7

x = - 3 x = - 11

Harris · Answer 2

2 (x+7) ^2 = 64

1 divide both sides by 2

(x+7) ^2 = 32

2 root both sides

x+7 = 4 * sqrt2

x = 4*sqrt2 - 7

Solve the following quadratic equation by the square root property of equality.2 (x + 7) 2 = 64