$\:y^2-y-1$
$\int\left(15sin^2x\cdot cos^2x\right)dx$
$\lim_{x\to1}\left(\frac{\ln\left(senx\right)}{\left(\pi-2x\right)^2}\right)$
$-3+4.5$
$\:456+-203+196+-401+275+841+-650+220$
$\left(3x^2\right)\left(4xy^7\right)^2$
$3y^2=4x^2-7$
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