$b^8+3b^4-4$
$1+x\cos\left(y\right)=0$
$\left(2v\:+\:8v^2\right)\:-\:\left(-4v\:-\:2v^2\right)$
$-113\cdot4$
$\frac{x^4-3x^2+2}{x-1}$
$\int\frac{8x-12}{x^2-3x+5}dx$
$-\left(-2-\left(-1-1+2\right)\right)$
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