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Quadratic equation whose roots are α & β is (x-α )( x-β)=0 i.e
x^2-( α+β )x+αβ=0 i.e
x^2-( sum of roots)x+product of roots=0

If α&β are the roots of the Quadratic equation ax^2+bx+c=0, then
α+β=-b/a
α*β=c/a
|α-β|=√D/|a|
Where , D=b^2-4ac;
# D is discriminant of a quadratics equation.

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