(x-3/x²+3x/2)(x²/x²-4x+3)=
问题描述:
(x-3/x²+3x/2)(x²/x²-4x+3)=
答
(x-3/x²+3x/2)(x²/x²-4x+3)
=2(x-3)/x(x+3)*x²/(x-1)(x-3)
=2x/(x+3)(x-1)
=2x/(x²+2x-3)