$\frac{2cos}{sen.sec^2}$
$-\frac{3}{8}x=6\frac{5}{8}$
$1.6+.18+2.3$
$\left(4x-6y\right)\left(5x+3y\right)$
$1x+12$
$\frac{x^8-256}{x-2}$
$x\sin\left(y\right)-x^2\cos\left(y\right)^2$
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