Expand
10m^{2}-29mn-21n^{2}
Evaluate
\left(2m-7n\right)\left(5m+3n\right)
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10m^{2}+6mn-35nm-21n^{2}
Apply the distributive property by multiplying each term of 2m-7n by each term of 5m+3n.
10m^{2}-29mn-21n^{2}
Combine 6mn and -35nm to get -29mn.
10m^{2}+6mn-35nm-21n^{2}
Apply the distributive property by multiplying each term of 2m-7n by each term of 5m+3n.
10m^{2}-29mn-21n^{2}
Combine 6mn and -35nm to get -29mn.
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