$x^3-x^9$
$\frac{4}{9}z-\frac{3}{9}z+2-\frac{5}{9}z-9$
$\frac{5}{40i+10}$
$-4\left(-8v-6\right)-7$
$10xy^2+80xy+160y$
$\int_{45}^{90}\left(\frac{1}{\left(sen\left(x\right)\right)^2}\right)dx$
$4ab^2+2b^2-10+8ab^2+3-3b^2$
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