The first and the third equation can be solved by using the zero product property. Let us examine each equation. 4x²+16x=0 4x(x+4)=0 4x=0 and x+4=0 where x1=0 and x2=-4 Next answer is whown below: (x+4)(x-12)=0 x1=-4 and x2=12 Therefore, the first and the third equations are the answers.