$7a\:-\:b\:+\:6a\:+\:8b$
$m^2+18+81$
$8\:sin^2\left(\theta\:\right)cos^2\left(\theta\:\right)=1-cos\:\left(4\theta\:\right)$
$a^2\cdot a^5\cdot a^{-6}$
$\int e^{3-2t}dx$
$5=\frac{g}{8}$
$-18+3\left(-10+3\cdot7\right)$
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