If a,b,c are rational and a+b+c=0, prove that the roots of the quadratic ax²+bx+c=0 are rational

If a,b,c are rational and a+b+c=0, prove that the roots of the quadrat

1.	If a,b,c are rational and a+b+c=0, prove that the roots of the quadratic ax²+bx+c=0 are rational
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