计算:(2x-6)/(4-4x+x^2)除以(x+3)乘以(x^2+x-6)/(3-x)
问题描述:
计算:(2x-6)/(4-4x+x^2)除以(x+3)乘以(x^2+x-6)/(3-x)
答
求X?
答
2/(2-x)
答
= 2/2-X
=(2X-6)/(X-2)^2 乘以 1/(X+3) 乘以 (X-2)(X-3)/(3-X)
把那个式子分解了就好算了 一消就都没了