Question

one of the roots of equation x2+MX-5=0 is 2 find m​

Answer 1

Question:-

one of the roots of equation x2+MX-5=0 is 2 find m.

Given equation:-

• x² + mx - 5 = 0

Solution:-

Given,

• x = 2
• x² + mx - 5 = 0
• 2² + m(2) - 5 = 0
• 4 + 2m - 5 = 0
• 2m -1 = 0
• 2m = 1
• m = 1/2

→ m = 1/2

Verification:-

2² + 1/2 × 2 - 5 = 0

4 + 1 - 5 = 0

5 - 5 = 0

0 = 0