kmh05
13.03.2020 •
Mathematics
30 points! The details are in the attachment.
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Ответ:
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
Ответ: