$\int4sec^3xtanxdx$
$-\left(-3m-2\right)+2\left(2m^2+3\right)-\left(3m^2-3m\right)$
$4x\left(x-3y\right)-2\left(x-3y\right)$
$4^3\cdot4^{-9}\cdot4$
$x^2+7x-8$
$2x^2+18=90$
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