$\left(4x-3\right)\left(x+3\right)$
$2\sin y\cos y$
$4^{x+1}+4^{x+2}-320=0$
$f\left(x\right)=\frac{x^2-2x+1}{x-1}$
$p^2-37p=0$
$2x-7\le-18x-1$
$4x+4x+4x+4x$
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