(2x+3)²=4(2x+3)
(2x+3)(2x+3-4)=0
(2x+3)(2x-1)=0
x=-1.5 x=0.5
2(x-3)²=x²-9
2(x-3)²=(x+3)(x-3)
(x-3)(2x-6-x-3)=0
(x-3)(x-9)=0
x=3 x=9
(2x+3)²=4(2x+3)
(2x+3)(2x+3-4)=0
(2x+3)(2x-1)=0
x=-1.5 x=0.5
2(x-3)²=x²-9
2(x-3)²=(x+3)(x-3)
(x-3)(2x-6-x-3)=0
(x-3)(x-9)=0
x=3 x=9