$\tan\left(a\right)+\sec\left(a\right)=\sec\left(a\right)$
$\frac{dy}{dx}+\frac{3y}{x}=3x^2$
$2\sin^2x+sinx=0$
$p\left(0\right)=-5.\left(0\right)^3-3.0+7$
$17m^3n^3-51m^2n^2-85mn$
$2x^2+x-1$
$\frac{1.253}{12}$
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