$w^2+8w-65=0$
$\sqrt{9\left(\frac{2}{3}\right)+19}$
$x-2\left(x+3\right)>-5+19x$
$\left(7c+5\right)\left(7c-7\right)$
$2^3+8^2-5^2$
$sinx-sin3x$
$\left\{\left(10x^3\right)^2\right\}^5$
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