Factor
\frac{9ga^{2}+64b^{4}-144ab^{2}}{144}
Evaluate
\frac{ga^{2}}{16}-ab^{2}+\frac{4b^{4}}{9}
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\frac{9ga^{2}-144ab^{2}+64b^{4}}{144}
Factor out \frac{1}{144}.
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