#### Question

Solve : 5m² - 22m-15 = 0

#### Solution

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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Solution Solve : 5m² - 22m-15 = 0 Concept: Arithmetic Progression Examples and Solutions.