Respuesta :

amna04352

Answer:

Third step.

When 64 was added, there should have been a -64 to keep the equation unchanged

x² - 16x - 29 = 7

x² - 2(x)(8) + 8² - 8² = 7 + 29

(x - 8)² = 36 + 64

(x -8)² = 100

x - 8 = 10 x - 8 = -10

x = 18 x = -2

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