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1,$\left | x-8 \right |\geq\left | x^{2}+3x-4 \right |$

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lovemoon

lovemoon

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giải bất phương trình :

1,$\left | x-8 \right |\geq\left | x^{2}+3x-4 \right |$

2,$\left | x-5 \right |\geq\left | x^{2} -3x+5\right |$






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