$\left(1.3+3\right)$
$2+80y+64y^2$
$3\left(1.1\right)^4-3\left(1.1\right)^3-\left(1.1\right)^2+3\left(1.1\right)-1\:$
$-2^2-8x-2+1$
$\left(m+2\right)^2$
$x^2+8x+9=0$
$\int_1^{\infty}\left(\frac{1}{\left(1+x^2\right)^2}\right)dx$
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