what is x3+3x2-x-3 factor by grouping
x3 + 3x2-x-3=0x2(x+3)-(x+3)=0(x2-1)(x+3)=0x2-1=0(x-1)(x+1)=0x=1x=-1x+3=0x=-3
\(x^3+3x^2-x-3\)\(x^2(x+3)-x-3\)\(x^2(x+3)-(x+3)\)\(\boxed{\boxed{(x+3)(x^2-1)}}\)
