$5x+4-2x$
$\frac{52x+26}{13}$
$-36-b^2$
$3x^2-18x+27$
$\left(2\cdot6^{5\:}\right)^{-2}$
$tanxsecx=\frac{\left(sin^3x+cos^2xsinx\right)}{cos^2x}$
$2m^2+2m+12$
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