【数学分式计算,要过程】(4-4x+x²)分之(2x-6)÷(x+3)*(3-x)分之(x²+x-6)(4-4x+x²)分之(2x-6)÷(x+3)*(3-x)分之(x²+x-6)(x²-4)分之(x²-4x+4)+(x+2)分之(x²-2x)-(x分之1)+1【(x²-2x)分之(x+2)-(x²-4x+4)分之(x-1)】÷(x²+4x)分之(x²-16)
问题描述:
【数学分式计算,要过程】(4-4x+x²)分之(2x-6)÷(x+3)*(3-x)分之(x²+x-6)
(4-4x+x²)分之(2x-6)÷(x+3)*(3-x)分之(x²+x-6)
(x²-4)分之(x²-4x+4)+(x+2)分之(x²-2x)-(x分之1)+1
【(x²-2x)分之(x+2)-(x²-4x+4)分之(x-1)】÷(x²+4x)分之(x²-16)
答
原式=(2(x-3))/(2-x)²/((x-2)(x+3))/(3-x)(3+x))=2-x
答
1、2(x-3)/(x-2)²×1/(x+3)×[-(x+3)(x-2)/(x-3)]=-2/(x-2) 2、(x-2)²/(x+2)(x-2)+x(x-2)/(x+2)-1/x+1 =(x-2)/(x+2)+x(x-2)/(x+2)+(x-1)/x 这个检查一下 3、[(x+2)/x(x-2)-(x-1)/(x-2)²]×x(x+4...