$\left[\left(\sin\left(x\right)+\cos\left(x\right)\right)^2-\left(\sin\left(x\right)-\cos\left(x\right)\right)^2\right]\tan\left(x\right)$
$\left(\:10m\:-\:9\right)\left(\:10m\:+\:9\:\right)\:$
$12^{-4}\cdot12^4$
$14.6x^4-30^3+2x^2$
$94+x=180$
$3x-5-\frac{5-8x}{x-1}$
$\left(6-5i\right)-\left(2-3i\right)$
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