Question

pls ans very urgent 5 pls​

Answer 1

Answer:

If a quadratic equation has equal roots then Determinant = 0

⇒ b² - 4ac = 0

⇒ b² = 4ac

⇒ (m + 2)² = 4(1)(m + 5)

⇒ m² + 4m + 4 = 4(m + 5)

⇒ m² + 4m + 4 = 4m + 20

⇒ m² = 4m + 20 - 4m - 4

⇒ m² = 16

⇒ m = ±4

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