$\left(a+5x\right)^7$
$\frac{14\pi}{6}$
$5x^2\:+37x+14$
$\left(x\:-\:11\right)\left(x\:+\:10\right)\:$
$-3t+4=19$
$\left(\frac{9}{10}\right)^{\infty}$
$2.1\cdot7$
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