English, asked by rani98692, 8 months ago

sum of the roots of 5x²+3x-7=0

Answers

Answered by kdjain613538

3

Explanation:

sum of roots : alpha +beta=-b/a

a= 5 , b= 2

5x²+2x -7 =0

5x²+7x-5x -7 =0

x(5x+7)-1(5x +7)=0

(x-1)(5x+7) =0

x-1=0

x= 1(Alpha)

5x+7=0

5x=-7

x= -7/5(beta)

sum of roots : alpha +beta=-b/a

1+(-7/5) = -2/5

-2/5 =-2/5

L.H.S = R.H.S.

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