Factor
\frac{\left(\pi -2\right)a^{2}}{2}
Evaluate
\frac{\left(\pi -2\right)a^{2}}{2}
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\frac{\pi a^{2}-2a^{2}}{2}
Factor out \frac{1}{2}.
a^{2}\left(\pi -2\right)
Consider \pi a^{2}-2a^{2}. Factor out a^{2}.
\frac{a^{2}\left(\pi -2\right)}{2}
Rewrite the complete factored expression.
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