$a+a+2a$
$\frac{\left(\sin^2\left(x\right)\cot\left(x\right)\right)}{\cos\left(x\right)}$
$3cos\left(2x\right)+13cosx+5=6cosx$
$\left|\left(-2\right)-\left(-1\right)^2\right|^3$
$70.0848+0.00006+0.000005+0.000005+0.000003$
$\lim_{x\to1}\left(x^2-1\right)ln\left(x-1\right)$
$x\cdot y\cdot dx=dy$
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