Question

Please can someone explain why the factorisation of x^2+x-2 is 1 and -2 but not -1 and 2? RELEVANT ANSWERS PLEASE !!!

Answer 1

Answer:

here 1and -2 is factorisation because it satisfied the polynomial it means if we put x=1 , -2 it will zero hence it is right

but if we put x=-1 , 2 it doesn't satisfied the polynomial that's why-1, and 2 is not factorisation

Answer 2

Answer:

x^2+x-2

Step-by-step explanation:

x^2+2x-x-2

x(x+2)-1(x+2)

x+2=0, x-1=0

x=-2, x=1

I hope it will help you