Question

[Mộc Miên]

giải các bất phương trình sau:

1) (x-2)(9-x²)≤0

2) (x²-x-6)(x²-3x+2)≥0

3) \(\frac{\left(x-2\right)\left(9-x\right)}{x-1}\)≤0

4) \(\frac{x\left(x^2-3x+2\right)}{x+4}\)≥0

5) \(\frac{\left(x+2\right)}{\left(x+1\right)\left(x-2\right)}\)<0

6) \(\frac{\left(x-2\right)\left(9-x^2\right)}{x-1}\)≥0

7) \(\frac{x^2\left(x-3\right)}{3x^2+x-4}\)≥0

8) \(\frac{x^2-3x+2}{9-x}\)≥0

9) \(\frac{x^2+1}{x^2+3x-10}\)≤0

10) \(\frac{x^2-9x+14}{x^2+9x+14}\)≥0