$cos\left(70-x\right)$
$\int2x^2\left(x^2-3x^3\right)dx$
$\tan\left(x+y\right)=x+1$
$7-1-x-5y+4y-6$
$\frac{x}{3y^2}\left(\frac{4y}{9x^2}\right)$
$\left|4\right|-\left|6-3\right|$
$-16t^2+48t+448=-16\left(t-7\right)\left(t+4\right)$
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