$\frac{1+\frac{1}{\cos^2\left(x\right)}}{\:1+\frac{\sin\left(x\right)^2}{\cos\left(x\right)^2}}$
$\left(m-3\right)\left(m+10\right)$
$-7-4-11-4-2-7-4-5-8$
$2x^2+3x+6=0$
$68\cdot5.73$
$2.4+51.21+313.528$
$2.2^{7\:}^5$
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