$8-3\left(n-4\right)=5\left(3n+2\right)-8$
$-2+5-8-9+6-1$
$\sqrt{\frac{x+\sqrt{x^2-1}}{3x}}$
$a ^ { 10 } - 49 b ^ { 12 }$
$2x\:-\:1\:+\:x-1\:+x+3+4x+2x-5+3x+7$
$\left(5m^2-3x^2\right)^3$
$-\left(2x^3\right)^3$
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