解方程:2(x-1)²-(x+3)²=(x-2)(x+6)-12x

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解方程:2(x-1)²-(x+3)²=(x-2)(x+6)-12x

解方程:2(x-1)²-(x+3)²=(x-2)(x+6)-12x
解方程:2(x-1)²-(x+3)²=(x-2)(x+6)-12x

解方程:2(x-1)²-(x+3)²=(x-2)(x+6)-12x
答案:x=5/2

2(x-1)²-(x+3)²=(x-2)(x+6)-12x
2(x²-2x+1)-(x²+6x+9)=x²+4x-12-12x
2x²-4x+2- x²-6x-9 -x²-4x+12+12x=0
-2x+5=0
x=5/2