Question

One of the roots of equations x² +mx-5=0 is 2,find m.

Answer 1

Answer:

m = 1/2

Step-by-step explanation:

$x^{2} + mx - 5 = 0\\\\2^{2} + 2m - 5 = 0\\\\4 + 2m - 5 = 0\\\\2m - 1 = 0\\\\2m = 1\\\\m = \frac{1}{2}$

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Answer 2

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Given data,

2 is a root of the given equation

.'. x=2

To find,

m=?

Calculations,

${x}^{2} + mx - 5 = 0 \\ {2}^{2} + 2m - 5 = 0 \\ 2m - 1 = 0 \\ 2m = 1 \\ m = \frac{1}{2}$

Final answer,

the value of m in the given equation is 1/2