$2x^2+12x-5$
$-\frac{1}{2}a^3+5a^2+7;\:a=-1$
$2x^4-5x^2$
$x^2+3x^2+2x$
$\left(\frac{1}{5}x+3\right)^2$
$\int\:cos\left(8x+2\right)dx$
$1+-6+36$
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