Question

if alpha and beta are roots of a x square- bx + c = 0 (a not =0 ) then calculate alpha + beta

Answer 1

hey there ,,,

alpha +beta =-b/a

the solution of the question given in attachment .

hope it helps !!

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Answer 2

If ax²+bx+c = 0 is given,

α+β = -b/a

In question, x²-bx+c = 0 is given,

So,

α+β = -(-b)/a

α+β = b/a

Proof in image

Quadratic formula of finding roots used in the proof

Hope it helps

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