因式分解(7x^2+5x)/(x^+1) - 5x/(x^2-6)
问题描述：
因式分解(7x^2+5x)/(x^+1) - 5x/(x^2-6)
答
原式=(7x^4-42x²+5x³-30x-5x³-5x)/(x²+1)(x²-6)=(7x^4-42x²-35x)/(x²+1)(x²-6)=7x(x³-6x-5)/(x²+1)(x²-6)=7x(x³+x²-x²-6x-5)/(x²+1)(x...