(2x+1)^2 = 4(3x-2)^2 ,两边开方得 2x+1 =2(3x-2) 或 2x+1 = -2(3x-2) ,因此 2x+1 = 6x-4 ,x = 5/4 ;或 2x+1 = -6x+4 ,x = 3/8 。
(2x+1)^2=4(3x-2)^2(2x+1)^2-[2(3x-2)]^2=0[(2x+1)+(6x-4)][(2x+1)-(6x-4)]=0(8x-3)(-4x+5)=08x-3=0x=3/8或者-4x+5=0x=5/4