Mathematics: Solve x2 + 4x – 4 = 8 for x. a) = –12 or x = 2 b)x = –11 or x = 1 c)x = –2 or x = 12 d)x = –1 or x = 11

Solve x2 + 4x – 4 = 8 for x. a) = –12 or x = 2 b)x

Ответ:

Shamiyah732

01.01.2022

Hello :
x² + 4x – 4 = 8
x²+4x -12 = 0
(x²+2(2)(x)+2²)-2² -12 =0
(x+2)² -16 = 0
(x+2)² = 4²
x+2 = 4 or x+2 = -4
x=2 or x= -6

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Ответ:

Dreynolds1667

12.12.2020

Mathematics

Sorry.that is cheating.Just prey god. try your best.I bet you'll do great.

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Solve x2 + 4x – 4 = 8 for x. a) = –12 or x = 2 b)x = –11 or x = 1 c)x = –2 or x = 12 d)x = –1 or x = 11

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