$\frac{8\cdot5}{2-2}+5^2$
$\frac { 1 } { 2 } z - 12 = 36$
$5x-2y=1$
$\left(2a\:+\:3\right)^2$
$19\left(-10f-15\right)+2f$
$120\cdot28.6$
$\left(\frac{1}{x}+\frac{1}{x^8}\right)\left(5x^9+8\right)$
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