$\left(d^2+\left(2f-c\right)\right)^2$
$\left(4m^2-7\right)^2$
$\frac{9x^{2\:}y^7}{3x^2y^7}$
$\frac{3}{5}x^2+15x=-1$
$\int\frac{x}{\sqrt{81x^2+1}}dx$
$x-2y+3z=1$
$\int - 3 x ^ { 7 } d x$
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