Question

If one root of the quadratic equation x2+ mx- 5=0 is 2 then find the value of m.​

Answer 1

Step-by-step explanation:

x2 + mx - 5 = 0

put x = 2

2^2 + 2m -5 = 0

4 + 2m -5 = 0

2m = 1

m = 1/2

Answer 2

Answer:

Given,X=2

so,x2+mx-5=0

2×2+m×2-5=0

4+2m-5=0

4-5=-2m

-1=-2m

1/2=m