$1=4^{2x+2}$
$\left(x^2+7\right)\left(x^2+6\right)$
$-3z-\left(-z-2\right)-2z-2$
$2a-1^2$
$\left(-25+49x^{16}\right)$
$\frac{dx}{dt}+\:4\left(x^2+1\right)\:=\:0$
$\:\left(2x-1\right)\:\left(2x-1\right)\:\left(2x-1\right)\:\left(2x-1\right)$
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