(1) (2x+3)∧2=4(2x+3) (2x+3)∧2-4(2x+3)=0 (2x+3)(2x+3-4)=0 (2x+3)(2x-1)=0 2x+3=0 2x-1=0 亩乱 x=-3/2 x=1/2(2) 2(x-3)∧2=x∧2-9 2(x-3)∧纤耐含毁笑2-(x+3)(x-3)=0 (x-3)(2x-6-x-3)=0 (x-3)(x-9)=0 x-3=0 x-9=0 x=3 x=9