Question

if one zero of the quadric polynomial x2 +x-2 is-2 please long process ​

Answer 1

Assuming you want to find the other zero-

Equation=x^2+x-2

Zero 1=(x+2)  {Given}

We can find the other zero by long division

(x^2+x-2)/(x+2)

=(x-1)

Therefore the other zero is (x-1)