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19f^{2}
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19f^{2}
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\left(-3f\right)^{2}+5f^{2}\times 2
Multiply f and f to get f^{2}.
\left(-3\right)^{2}f^{2}+5f^{2}\times 2
Expand \left(-3f\right)^{2}.
9f^{2}+5f^{2}\times 2
Calculate -3 to the power of 2 and get 9.
9f^{2}+10f^{2}
Multiply 5 and 2 to get 10.
19f^{2}
Combine 9f^{2} and 10f^{2} to get 19f^{2}.
\left(-3f\right)^{2}+5f^{2}\times 2
Multiply f and f to get f^{2}.
\left(-3\right)^{2}f^{2}+5f^{2}\times 2
Expand \left(-3f\right)^{2}.
9f^{2}+5f^{2}\times 2
Calculate -3 to the power of 2 and get 9.
9f^{2}+10f^{2}
Multiply 5 and 2 to get 10.
19f^{2}
Combine 9f^{2} and 10f^{2} to get 19f^{2}.
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