SOLUTION: what is the sum of the roots of the equation ax exponent 2+bx+c=0?

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Question 49110: what is the sum of the roots of the equation ax exponent 2+bx+c=0?




Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
The sum of the roots of ax%5E2%2Bbx%2Bc+=+0?
Since the the roots are given by:
x+=+%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F2a and x+=+%28-b-sqrt%28b%5E2-4ac%29%29%2F2a
Their sum is:
%28%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F2a%29+%2B+%28%28-b-sqrt%28b%5E2-4ac%29%29%2F2a%29 = -2b%2F2a+=+-b%2Fa