$\frac{4x^2+18x-36}{4x-6}$
$196x^2y^4-225z^{12}$
$x^{2}-6x+3=0$
$2+0+-1+-1$
$\left(3x^3y\right)\left(2y+3x^2y-5\right)$
$\int_{\frac{\pi}{6}}^{\frac{3\pi}{2}}\left(sen^4\:x\right)dx$
$\int\frac{1}{\left(3+w\right)^2}dw$
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