Factor
2\left(ab-3c\right)^{2}
Evaluate
2\left(ab-3c\right)^{2}
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2\left(a^{2}b^{2}-6abc+9c^{2}\right)
Factor out 2.
\left(ab-3c\right)^{2}
Consider a^{2}b^{2}-6abc+9c^{2}. Use the perfect square formula, p^{2}-2pq+q^{2}=\left(p-q\right)^{2}, where p=ab and q=3c.
2\left(ab-3c\right)^{2}
Rewrite the complete factored expression.
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