$-65+4-9+86-54-6+5-45$
$4x^2-3x+1=0$
$\:729rtsx:-9rt$
$12\left(5x+17\right)^5$
$\frac{b^{-1}}{b^{-7}}$
$\int2x^2sin\left(2x\right)dx$
$\int\sec\left(1-x\right)dx$
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