(x + 3)2 = (x − 3)(x + 3)
(x + 3)2 = (x − 3)(x + 3)
(x + 3)² = (x − 3)(x + 3)
x² + 6x + 9 = x² - 9
x² - x² + 6x = - 9 - 9
6x = -18
x = -18/6
x = - 3
☆༒ Eternamente axllxa ༒☆
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