Question

One of the roots of the equation x²+mx-5=0 is 1. Find m
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Answer 1

Step-by-step explanation:

Product of roots= c/a

= -5

Since one root is 1

The other root would be -5

We know that

Sum of roots = -m

=1-5

=-4

m= -4

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Answer 2

Given

$x {}^{2} + mx - 5 = 0$

$first \: root \: is \: 1 = \alpha$

$let \: second \: root \: be \: \beta$

We know that ,

$\alpha \beta = c \div a$

$1 \beta = - 5 \div 1$

$\beta = - 5$