$\cos\left(170\right)\cos\left(40\right)-\sin\left(40\right)\sin\left(170\right)$
$2\left(-1\right)-3\left(2\right)+3$
$\int2^x\cdot5^x$
$\left(\frac{3}{4}xy^2-\frac{5}{3}x^2y\right)^2$
$\lim_{t\to4}\left(\frac{t^3+64}{t+4}\right)$
$x^2=4py\:$
$5x\:+\:15\:-\:x\:+\:1$
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