$\log_a\left(\frac{1}{343}\right)=-3$
$4z^2+8z+4=0$
$2x^2+6x+16$
$\frac{x^2-5x+33}{x+5}$
$\frac{1}{3}\left(x+\frac{2}{5}\right)=-\frac{23}{15}$
$-3n>4n-7$
$\sqrt[4]{b^7}m^3$
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