s−1t6s−1tstt−1\frac{s^{-1}t^6s^{-1}tst}{t^{-1}}t−1s−1t6s−1tst
29x<7+x\frac{2}{9}x<7+x92x<7+x
x5−x3+3x23\sqrt[3]{\frac{x^5-x^3+3}{x^2}}3x2x5−x3+3
(9(3x+2)2)=3(−33x+2)2\left(\frac{9}{\left(3x+2\right)^2}\right)=3\left(-\frac{3}{3x+2}\right)^2((3x+2)29)=3(−3x+23)2
−3m+26=5-3m+26=5−3m+26=5
(x2−1)(x4+x2+1)\left(x^2-1\right)\left(x^4+x^2+1\right)(x2−1)(x4+x2+1)
−x<−x+7(x−2)-x<-x+7\left(x-2\right)−x<−x+7(x−2)
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