计算：(2x-6/4-4x+x²)÷(x+3)乘x²+x-6/3-x 计算中的过程要有

计算：(2x-6/4-4x+x²)÷(x+3)乘x²+x-6/3-x 计算中的过程要有
计算：(2x-6/4-4x+x²)÷(x+3)乘x²+x-6/3-x 计算中的过程要有

计算：(2x-6/4-4x+x²)÷(x+3)乘x²+x-6/3-x 计算中的过程要有
=2(x-3)/(x-2)平方 ×1/(x+3) ×[-(x+3)(x-2)/(x-3)]
=-2/(x-2)