Question

X square +6x-80 is equal to 0

Answer 1

X^2+6x-80=0

X^2+(10-4)x-80=0

X^2+10x-4x-80=0

X(x+10)-4(x+10)=0

(x-4)(x+10)=0

So, x=4,-10

Answer 2

hope you understand