$\int te^{-3t}\:dx$
$2k^2+k-7=0$
$\csc\left(60\right)^2+\sec\left(60\right)^2-\cot\left(60\right)^2$
$\int tnxdx$
$f=\frac{9}{5}\left(20\right)+32$
$2\cdot7-5\cdot4+3\cdot6-2\cdot11+13$
$3y^4-2x^3y+4x^3-5y^4x+3;x=2;y=3$
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