(1)x^2-2x+2/3>0(2)9x^2-6x+1≥0
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(1)x^2-2x+2/3>0(2)9x^2-6x+1≥0
(1)x^2-2x+2/3>0
(2)9x^2-6x+1≥0
(1)x^2-2x+2/3>0(2)9x^2-6x+1≥0
先把两个不等式的左边配方,配方后写成完全平方的式子,将多于的项移至不等式右边,两边同时开方[注意正负两个根都要],开方后解1次不等式即可
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