Answer:
x² - 2x = 3
x² - 2x + _ = 3 + _
x² - 2x + 1 = 3 + 1
(x - 1)² = 4
x = -1 ; x = 3
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Answer:
x² - 2x = 3
x² - 2x + _ = 3 + _
x² - 2x + 1 = 3 + 1
(x - 1)² = 4
x = -1 ; x = 3