Answers by visitors named: nimra

atomic no

1.2

Factorization method is X2+2x-80=0 X2(+10x-8x)-80=0 (X2+10x)(-8x-80)=0 X(x+10)-8(x-10)=0 (X-8)(x+10)=0 (X-8)=0 or. (x+10)=0 X=8 and x=-10