求式子x+2/x-3乘x2-6x+9/x2-4

问题描述:

求式子x+2/x-3乘x2-6x+9/x2-4

[(x+2)/(x-3)][(x²-6x+9)/(x²-4)]
=(x+2)(x-3)²/[(x-3)(x+2)(x-2)]
=(x-3)/(x-2)