$3x^2+6x+3^2$
$a^{2}-2at$
$2\sec^2\left(x\right)+\tan\left(x\right)-3=0$
$\frac{tan\left(x\right)}{tan\left(x\right)+cot\left(x\right)}=sin^2\left(x\right)$
$x^{13}+2x^7-3x$
$4z^2+32y+64$
$\int\frac{2x^3+x-1}{x^2-5x}dx$
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