$4m^2+4m$
$8mx+18x^2y-25x^3y^2$
$\left(4m+8p\right)\left(a^{2}+b^{2}\right)\left(6n-d\right)$
$\left(1+senx\:\right)\:\left(1+cosx\right)$
$-5x^3y+2x^2+3x-2x^2+8x^3+y$
$\frac{-x^{3}+2x^{2}+x-2}{2x-2x^{2}+x^{3}-1}$
$\lim_{x\to\infty}\left(\frac{3x-1}{2+x}\right)$
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