$z+55=70$
$\left(d^3+2\right)\left(d^2+2d+3\right)$
$\frac{x^n-1}{x^3-1}$
$\sqrt{a^2+a^4}$
$8x^6+125y^3$
$2x^3+5x-3\:;\:x=-1$
$\int5\left(2x+5\right)^{-5}dx$
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