$2\cos\left(x-1\right)=0$
$a-\left(b+d\right)$
$124+643$
$\int\frac{x^2}{\left(2x^3+1\right)}dx$
$-15.450\:+-16.890\:$
$3y^2+\left(12-5y^2\right)$
$5z^4+7z^4-2z^4$
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