Factor
9\left(3r^{4}+2s\right)^{2}
Evaluate
9\left(3r^{4}+2s\right)^{2}
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9\left(9r^{8}+12r^{4}s+4s^{2}\right)
Factor out 9.
\left(3r^{4}+2s\right)^{2}
Consider 9r^{8}+12r^{4}s+4s^{2}. Use the perfect square formula, a^{2}+2ab+b^{2}=\left(a+b\right)^{2}, where a=3r^{4} and b=2s.
9\left(3r^{4}+2s\right)^{2}
Rewrite the complete factored expression.
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