(3x+2)^2-4x^2=0
(3x+2+2x)(3x+2-2x)=0
(5x+2)(x+2)=0
x=-2或x=-2/5
(5X-3)^2=16（X-1）^2
(5x-3)^2-16(x-1)^2=0
[(5x-3)+4(x-1)][(5x-3)-4(x-1)]=0
(9x-7)(x+1)=0
x=7/9或x=-1
（X-1）^2=2（1-X）
(x-1)^2+2(x-1)=0
(x-1)(x-1+2)=0
(x-1)(x+1)=0
x=1或x=-1
（x +√2）×（2X+√3）=√6
2x^2+(√3+2√2)X+√6=√6
2x^2+(√3+2√2)x=0
x[2x+√3+2√2]=0
x=0或x=-(2√2+√3)/2