$3\sqrt{49}+2\cdot9^2-13\cdot6^0$
$\cos\left(\pi-3\frac{\pi}{2}\right)$
$-5\cdot\left(-1\right)\cdot\left(-6\right)$
$121z^4-4$
$-7a^2+5ab+3a^2-a^2$
$sen\left(10u-7v\right)$
$\int x^{13}\left(x^7-5\right)^{\frac{3}{2}}dx$
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