$\left(\frac{9}{\left(3x+2\right)^2}\right)=3\left(-\frac{3}{3x+2}\right)^2$
$\left(-7\right).\left(+3\right)+\left(+4\right)-\left(2+5-1\right)$
$\lim_{x\to1.57}\left(\sec\left(x\right)\right)$
$4x-2y^2=0$
$20x\le-230$
$3^2\cdot3^3\cdot3^6$
$y'=21+18x+21y+18xy$
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