因式分解，就是二次方程，急额。速度。。谢

1，x^2-6x+9=0
(x-3)^2=0
x-3=0
x=3

2，(5x-3)^2=16(x-1)^2
(5x-3)^2-[4(x-1)]^2=0
(5x-3)^2-(4x-4)^2=0
(5x-3+4x-4)(5x-3-4x+4)=0
(9x-7)(x+1)=0
x=7/9,x=-1

3,(x+√2)（2x+√3）=√6
2x^2+2√2x+√3x+√6=√6
2x^2+(2√2+√3)x=0
x(2x+2√2+√3)=0
x=0,x=-(2√2+√3)/2

1，x^2-6x+9=0,
(x-3)^2=0,
x1=x2=3;

2，(5x-3)^2=16(x-1)^2
(5x-3)^2-[4(x-1)]^2=0,
(5x-3+4x-4)(5x-3-4x+4)=0,
(9x-7)(x+1)=0,
x1=7/9,x2=-1;

3,(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,
x1=0,x2=-(√3+2√2)/2.