x(x^+1)≥（x+1) (x^-x+1)1-2x>3(x-9) 这2个是个不等式组

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x(x^+1)≥（x+1)(x^-x+1)1-2x>3(x-9)这2个是个不等式组x(x^+1)≥（x+1)(x^-x+1)1-2x>3(x-9)这2个是个不等式组x(x^+1)≥（x+1)(x^-x

x(x^+1)≥（x+1) (x^-x+1)1-2x>3(x-9) 这2个是个不等式组
x(x^+1)≥（x+1) (x^-x+1)
1-2x>3(x-9)
这2个是个不等式组

x(x^+1)≥（x+1) (x^-x+1)1-2x>3(x-9) 这2个是个不等式组
xxx+x>=xxx+1
5x
1

化简后画图。求交点，找区域。

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