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Solve: x2 - 4x - 3 |
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Answer» x2 − 4x − 3 = 0 ⇒ x2 − 4x + 4 − 7 = 0 ⇒ (x−2)2 − 7 = 0 ⇒ (x−2)2 = 7 ∴ x − 2 = −√7, +√7 x = 2 − √7, 2 + √7 |
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