$\int\frac{\left(x^2+2x+1\right)}{\left(x-1\right)\left(x^2+1\right)^2}dx$
$a^2-b^2=36$
$\int\left(x^3\cdot\sqrt{3x^2+1}\right)dx$
$\left(234\right)\left(340\right)$
$2\sqrt{36}$
$\int\frac{2x^4+3x^3-x^2}{x^3}dx$
$49-64x^2$
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