解方程:2(x-1)²-(x+3)²=(x-2)(x+6)-12x

问题描述:

解方程:2(x-1)²-(x+3)²=(x-2)(x+6)-12x

答案:x=5/2求过程2(x^2-2x+1)-(x^2+6x+9)=(x^2+4x-12)-12x2x^2-4x+2-x^2-6x-9=x^2+4x-12-12xx^2-10x-7=x^2-8x-12-2x=-5x=2/5