Evaluate
\left(m-4\right)\left(n+1\right)+2m^{2}-16
Expand
2m^{2}+mn+m-4n-20
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2m^{2}-16+mn+m-4n-4
Use the distributive property to multiply m-4 by n+1.
2m^{2}-20+mn+m-4n
Subtract 4 from -16 to get -20.
2m^{2}-16+mn+m-4n-4
Use the distributive property to multiply m-4 by n+1.
2m^{2}-20+mn+m-4n
Subtract 4 from -16 to get -20.
Examples
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