求式子x+2/x-3乘x2-6x+9/x2-4

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求式子x+2/x-3乘x2-6x+9/x2-4
求式子x+2/x-3乘x2-6x+9/x2-4

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)

x+2/x-3乘x2-6x+9/x2-4
=x^3-6x^2+9/x-4x+2x-12+18/x^3-8/x-3x^2+18x-27/x^2+12
=x^3-9x^2+16x+1/x-27/x^2+18/x^3