9(2x-1)^2-4(2x+3)^2=0
问题描述:
9(2x-1)^2-4(2x+3)^2=0
答
9(2x-1)^2-4(2x+3)^2=0
(6x-3+4x+6)(6x-3-4x-6)=0
(10x+3)(2x-9)=0
x1=-3/10x2=9/2