解方程:5(x-1)²-2(x+3)²=(x-2)(3x+6)-12x

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解方程:5(x-1)²-2(x+3)²=(x-2)(3x+6)-12x

5(x-1)²-2(x+3)²=(x-2)(3x+6)-12x
5x²-10x+5-2x²-12x-18=3x²-12-12x
3x²-22x-13=3x²-12x-12
22x-12x=12-13
10x=-1
x=-0.1