计算:1 /( 6x-4y ) - 2y / (6x-4y ) - 3x /没枣竖 (4y²-6x²)
原式=(1-2y)/[2(3x-2y)]+3x/[2(3x²-2y²)
=[(1-2y)(3x²-2y²)+3x(3x-2y)]/[2(3x-2y)(3x²-2y²)]
=[(3x²-2y²-6yx²+4y³)+(9x²-6xy)]/[2(3x-2y)(3x²-2y²枯大)]
=[4y³-2y²岩扒-6xy(x+1)+12x²]/[2(3x-2y)(3x²-2y²)]
1 /( 6x-4y ) - 2y / (6x-4y ) - 3x / (4y²-6x²)
=(1-2y)/[2(3x-2y)]+3x/[2(3x²-2y²)
=[(1-2y)(3x²知困梁-2y²)+3x(3x-2y)]/[2(3x-2y)(3x²-2y²)]
=[(3x²-2y²-6yx²+4y³)+(9x²-6xy)]/[2(3x-2y)(3x²搭运-2y²尺嫌)]
=[4y³-2y²-6xy(x+1)+12x²]/[2(3x-2y)(3x²-2y²)]