Evaluate
9m^{2}-3mn-24n^{2}
Factor
3\left(3m^{2}-mn-8n^{2}\right)
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m^{2}+8m^{2}-3mn-24n^{2}
Multiply m and m to get m^{2}.
9m^{2}-3mn-24n^{2}
Combine m^{2} and 8m^{2} to get 9m^{2}.
9m^{2}-3mn-24n^{2}
Multiply and combine like terms.
3\left(3m^{2}-mn-8n^{2}\right)
Factor out 3.
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