$\tan\left(2\right)x\cdot\cos x+\cos\left(2\right)x=1$
$\int\frac{3x+1}{\left(x+2\right)\left(x+3\right)}dx$
$\lim_{x\to3}\ln\left(4+x\right)$
$a^{10}=1000$
$2x\:+\:5\:\ge6$
$5x^2-14x+8$
$\left(2ab+3mn\right)^2$
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