$41+4$
$\int\left(7x\left(3x^2-1\right)^7\right)dx$
$\left(5\cdot\:\:x+4\cdot\:\:y\right)dx+\left(4\cdot\:\:x+5\cdot\:\:y\right)dy=0$
$x+8+6x+50$
$14-12+14+1-9-1$
$7y+4y+5x$
$\lim_{x\to\infty}\left(\frac{2x^2}{x+4}\right)$
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