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Solve : 5m² - 22m-15 = 0 |
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Answer» 5m² - 22m - 15 = 0 ∴ 5m² - 25m + 3m - 15 = 0 ∴ 5m (m - 5) + 3(m - 5) =0 ∴ (m - 5) (5m + 3) = 0 ∴ m - 5 = 0 or 5m + 3 = 0 ∴ m = 5 or m = −3 / 5 |
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