Question

a) 3) x ^ 2 + mx - 5 = 0 या वर्गसमीकरणाचे एक मूळ 2 असेल तर M ची किंमत खालीलपैकी कोणती ? a) -2 - 1/2 b) 1/2 d) 2

Answer 1

Given quadratic equation ↓

* x² + mx - 5 = 0

• One root → 2

Putting x = 2 in the given equation , we get

★ 2² + m×2 - 5 = 0

→ 4 + 2m - 5 = 0

→ 2m - 1 = 0

→ m = -1/2

$\bold \colorbox{yellow}{Answer:- \: \: \: \: \: (b)\:\: 1/2 }$