$10n=40$
$\left(v^2+w\right)\left(v^2-w\right)$
$2x\cdot\left(x^2-5x\right)$
$\int arc\:csc\frac{t}{2}dt$
$m^2+10m+30=10$
$5.45-10.22-15.44+16$
$\frac{x^2+2x-8}{x+8}$
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