Question

X^+x-20=0 = x^+5x-4x-20=0
= x(x+5)-4(x+5)=0
= (x-4) (x+5)=0 = (x-4)=0 or (x+5)=0
So,-4 and 5 are the roots of the given quadratic equation

Answer 1

Answer:

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