$\int\left(sec15wtan15w\right)dw$
$\left(x+y-z\right)-\left(-x-x+z\right)$
$y'=y-2y^2$
$846.028+2123.04+8.126+4.37$
$\left(3-ax\right)^5$
$-1+2-3+2-5+3+6-4$
$3d+2d+3$
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