$\int\frac{\left(10+u\right)}{u}du$
$y'=sen\:5x$
$\int_1^2\frac{\left(2x+1\right)\left(x+2\right)}{x}dx$
$cos^8x-2cos^4x+1$
$3\cdot3^3\cdot5\cdot2^2$
$xy1$
$25x^2+70x+54$
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