1. $\left | x-1 \right |+\left | -2x+6 \right |\geq x-5$
2.$\sqrt{-x^2+4x-3}\geq 2x-5$
3. $\left | x^2+x-1 \right |\leq 2x-1$
4.$\sqrt{-x^2+6x-5}\geq 8-2x$
1. $\left | x-1 \right |+\left | -2x+6 \right |\geq x-5$
2.$\sqrt{-x^2+4x-3}\geq 2x-5$
3. $\left | x^2+x-1 \right |\leq 2x-1$
4.$\sqrt{-x^2+6x-5}\geq 8-2x$
1. $\left | x-1 \right |+\left | -2x+6 \right |\geq x-5$
2.$\sqrt{-x^2+4x-3}\geq 2x-5$
3. $\left | x^2+x-1 \right |\leq 2x-1$
4.$\sqrt{-x^2+6x-5}\geq 8-2x$
1. $\left | x-1 \right |+\left | -2x+6 \right |\geq \left | x-1-2x+6 \right | = \left | -x+5 \right |\geq x-5$
Dấu "=" xảy ra khi: $\left\{\begin{matrix} (x-1)(-2x+6)\geq 0\\ x\geq 5 \end{matrix}\right.$.....
$\large \mathbb{Conankun}$
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