化简(2x-6)除以(X平方-4x+4)除以(x+3)乘以(x平方+x-6)除以(3-x)
问题描述:
化简(2x-6)除以(X平方-4x+4)除以(x+3)乘以(x平方+x-6)除以(3-x)
答
原式=[2(x-3)/(x-2)²]÷(x+3)×(x+3)(x-2)/[-(x-3)]
=-2(x-3)(x+3)(x-2)/[(x-2)²(x+3)(x-3)]
=-2/(x-2)