$x^2+4x+29$
$\int x^2\cdot\frac{x}{\sqrt{4+x^2}}dx$
$8-2\left(x+3\right)$
$\sec\left(a\right)\cdot\tan\left(a\right)\cdot\csc\left(a\right)=\frac{1}{\cos^2\left(a\right)}$
$\int_{-5}^{10}e^{-.05x}dx$
$\left(a^2+5d^3\right)\left(a^2-5d^3\right)$
$2cos^2\left(x\right)=sen2x$
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