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x² - 4x = -3

x² - 4x + (4/2)² = -3 + (4/2)²

x² - 4x + 4 = -3 + 4

(x - 2)² = 1

x - 2 = ±√1

x - 2 = ± 1

x = 2 ± 1

x = 1 or x = 3

if you are still confused, i want you to follow the related link that explains the concept of completing the square clearly.

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15y ago
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Q: X squared-4x equals -3 using completing the square?
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