用因式分解法解下列方程:(1)(4x-1)(5x+7)=0 (2)3x(x-1)=2-2x (3)(2x+3)^2=4(2x+3)(4)2(x-3)^2=x^2-9

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用因式分解法解下列方程:(1)(4x-1)(5x+7)=0 (2)3x(x-1)=2-2x (3)(2x+3)^2=4(2x+3)(4)2(x-3)^2=x^2-9
用因式分解法解下列方程:(1)(4x-1)(5x+7)=0 (2)3x(x-1)=2-2x (3)(2x+3)^2=4(2x+3)
(4)2(x-3)^2=x^2-9

用因式分解法解下列方程:(1)(4x-1)(5x+7)=0 (2)3x(x-1)=2-2x (3)(2x+3)^2=4(2x+3)(4)2(x-3)^2=x^2-9
(1)(4x-1)(5x+7)=0
x=-7/5或x=1/4
(2)3x(x-1)=2-2x
3x(x-1)+2(x-1)=0
(3x+2)(x-1)=0
x=-2/3,x=1
(3)(2x+3)^2=4(2x+3)
(2x+3)^2-4(2x+3)=0
(2x+3)(2x-1)=0
x=-3/2,x=1/2
(4)2(x-3)^2=x^2-9
2(x-3)^2-(x-3)(x+3)=0
(x-3)(2x-6-x-3)=0
(x-3)(x-9)=0
x=3或 x=9

1、x1=1/4,x2=-7/5
2、3x(x-1)=2-2x ;3x^2-3x=2-2x;3x^2-x-2=0;(3x+2)(x-1)=0,x1=-2/3,x2=1
3、(2x+3)^2=4(2x+3);4x^2+12x+9=8x+12;4x^2-4x-3=0;(2x+1)(2x-3)=0;x1=-1/2,x2=3/2
4、2x^2-12x+18=x^2-9; x^2-12x+27=0;(x-3)(x-9)=0;x1=3.x2=9