$\sec\left(a\right)\left(\frac{\sin\left(a\right)}{\tan\left(a\right)}\right)=1$
$3\left(1-8n\right)+3n$
$2\cdot22\cdot5$
$x^2-40x+300$
$f^{20}-2^{20}$
$\left(m-11\right)^2$
$0.3ab5^2$
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