$2x+2y+2z=80$
$12\:y-98$
$\left(2x+1\right)\left(3-x\right)\left(x+5\right)$
$4y^8\:+\:36y^7\:+\:81y^6$
$\int\frac{1}{y}+\frac{1}{y+1}+\frac{1}{y-1}dy$
$\lim_{x\to\infty}\sqrt{x^2+2x}-\sqrt{x^2-x}$
$\frac{64a^3343}{4a-7}$
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