$\frac{j^{-1}\:.\:j^0\:.\:j^{-8}}{j^{-1}}$
$1-49a^2b^2$
$\int_0^{\frac{\pi}{4}}\left(\sec\left(x\right)\right)dx$
$4x^2\left(2x-5\right)^2+8x^3\left(5-2x\right)$
$\frac{x^2}{x^2-6x+5}$
$44.3-\left(-1.4\right)$
$x^2y^2+2x^2y+xy^2+2xy$
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