1) \(\frac{X+2}{X+3}+\frac{X-1}{X+1}=\frac{2}{X^2+4X+3}+1\)
2)\(\frac{X+1}{X-2}+\frac{2X-1}{X-1}=\frac{2}{X^2-3X+2}+\frac{11}{2}\)
3) Tìm GTLN CỦA -2X2+4X+3
4)\(\frac{X+1}{X-2}+\frac{X}{X+1}-\frac{2X+5}{X^2-X-2}=2\)
5)\(\frac{2X-1}{X+2}+\frac{X}{X+3}-\frac{2X^2+X+1}{X^2+5X+6}=\frac{-9}{2}\)