$8\cos^2\left(30\right)-6\cos\left(60\right)+1$
$4a^2-a^2$
$3x^{3\:}+9xy^2=5x^3$
$f\left(x\right)=\left(2x^3-3x^2+7\right)^2$
$n^3=8$
$\int\frac{\left(8x+4\right)}{\sqrt{1-4x^2}}dx$
$32x^3-12x$
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