$\int\left(x^2+\left(2\right)\right)dx$
$\left(x^2-3y^3\right)^2$
$\sin^2\left(2x\right)-4\sin^2\left(x\right)\cos\left(2x\right)=4\sin^4\left(x\right)$
$1.250\:-\:39.8\:+\:19.45$
$\lim_{x\to-\infty}\left(\frac{3-x}{2}\right)$
$3cos^2x-11cosx-4$
$3x+10=2x+40$
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