1 /\(\frac{x+1}{x-1}\)- \(\frac{x-1}{x+1}\)-\(\frac{4}{1-x^2}\)
2/ \(\frac{4x}{x+2}\)-\(\frac{3x}{x-2}\)+\(\frac{12x}{x^2-4}\)
3/ \(\frac{3x+21}{x^2-9}\)+\(\frac{2}{x+3}\)-\(\frac{3}{x-3}\)
4/ \(\frac{3x+1}{\left(x-1\right)^2}\)-\(\frac{1}{x+1}\)+\(\frac{x+3}{1-x^2}\)
5/ \(\frac{4x-2}{1-x^2}\)-\(\frac{2x-3}{x+1}\)+\(\frac{3x-1}{\left(x-1\right)^2}\)
6/ \(\frac{x}{x-2y}\)+\(\frac{x}{x+2y}\)+\(\frac{4xy}{4y^2-x^2}\)
Hộ mình nhanh nha!!! Mình đag cần gấp