Question

One Of The Roots Of Equation x² + mx – 5 = 0 is 2. FIND m?

Answer 1

Answer:

1/2

Step-by-step explanation:

putting x = 2

then , (2)² + m(2) -5 = O

4 + 2m - 5 = O

2m -1 = O

m = 1/2

Answer 2

Answer:

m = 1/2

Step-by-step explanation:

The root of equation is 2 means it satisfies the equation.

So put 2 in the equation.

∴ $f(x)=x^{2}+mx-5=0$

∴ $f(2)=2^{2} +m(2)-5=0$

∴ $2m =1$

∴ $m=\frac{1}{2}$

Thanks.