$45+28+103$
$-a^2-12a-108$
$\frac{dx}{dy}=4y^3\left(1+x^2\right)$
$\frac{2x^3-10x^2+8x-6}{2x-1}$
$\lim_{x\to0}\left(\sqrt{x^2+4ax}-\sqrt{x^2+4bx}\right)$
$17a\:-\:b\:+\:3ab\:+5b-3a$
$\int x\csc^2\left(3x^2+4\right)dx$
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