Giải các bpt saua) \(1\)\(< \)\(\frac{x+1}{1-x}\)\(\le\)\(2\) e) \(x+\)\(\frac{9}{x+2}\)\(\ge\)\(4\)b) \(\frac{2x^2+x}{1-2x}\)\(\ge\)\(1-x\) f) \(\frac{x^2+2x+5}{x+4}\)\(\ge\)\(x-3\)c) \(\frac{\left(x-1\right)\left(x-2\right)\left(1-2x\right)}{x\left(x+1\right)}\)\(< \)\(0\) g) \(\frac{x+1}{x-2}\)\(+\)\(\frac{3x+4}{x-3}\)\(>\)\(\frac{4x^2-2x}{x^2-5x+6}\)d) \(\frac{x+2}{x-1}\)\(>\)\(\frac{x+4}{x-3}\) ...
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Giải các bpt sau
a) \(1\)\(< \)\(\frac{x+1}{1-x}\)\(\le\)\(2\) e) \(x+\)\(\frac{9}{x+2}\)\(\ge\)\(4\)
b) \(\frac{2x^2+x}{1-2x}\)\(\ge\)\(1-x\) f) \(\frac{x^2+2x+5}{x+4}\)\(\ge\)\(x-3\)
c) \(\frac{\left(x-1\right)\left(x-2\right)\left(1-2x\right)}{x\left(x+1\right)}\)\(< \)\(0\) g) \(\frac{x+1}{x-2}\)\(+\)\(\frac{3x+4}{x-3}\)\(>\)\(\frac{4x^2-2x}{x^2-5x+6}\)
d) \(\frac{x+2}{x-1}\)\(>\)\(\frac{x+4}{x-3}\) h) \(\frac{\left(x-1^3\right)\left(x+2^4\right)\left(x+6\right)}{\left(x-7^3\right)\left(x-2^2\right)}\)\(\le\)\(0\)
