$-5\:\left(-4\right)\:\left(-25\right)$
$\left(sen\:30^{\circ}\right)\left(cose\:30^{\circ}\right)=\:1$
$-2\left(x-3y\right)\:+\:4y$
$\left(3x-7\right)\left(3x+19\right)$
$\int_1^{25}e^{2\sqrt{x}}dx$
$\lim_{x\to0}\left(\frac{\left(\sqrt[3]{x+27}-3\right)}{\left(\sqrt[4]{x+16}\right)}\right)$
$\frac{3x^5-2x^3+5}{x+2}$
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