$3x^3+4x^2-5x-2$
$\lim_{x\to\infty}\left(\frac{\sqrt{x^2+1}\:+\:\sqrt{x}}{\sqrt[2]{x^3+x}-x}\right)$
$\int\frac{1}{\left(225+x^2\right)}dx$
$-19\cdot37$
$-110+25-\left(-12\right)+13-10$
$6x+6x+6x+6x+6x+6x$
$\left(-9x^3+7y\right)^2=\:$
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