what is the sum of the roots of 2x^2-6x-8?

the sum of the roots of 2x^2-6x-8 equals what ?
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2 Answers

2x^2 -6x -8=0

or x^2 -3x -4 =0

(x-4)*(x+1)=0
by
sum of the roots of a quadratic eq. is -coefficient of x / coeficient of x^2

so sum = 3
by

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