Verified answer

Answer:

x²+5x+6=0

or, x²+(3+2)x+6=0

or, x²+3x+2x+6=0

or, x(x+3)+2(x+3)=0

or, (x+3)+(x+2)=0

x+3=0

or, x=-3

x+2=0

or, x=-2