$25x^2+10+4$
$\int cos^n\left(mx\right)sen\left(mx\right)dx$
$2x^2=5\left(3x+10\right)$
$3m+15=8m+5$
$\int_{-4}^0\sqrt{16-x^2}dx$
$8x^2\:-80x$
$3x^2=5+2x$
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