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2m^{2}
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2m^{2}
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m^{2}-16+m^{2}+16
Consider \left(m-4\right)\left(m+4\right). Multiplication can be transformed into difference of squares using the rule: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}. Square 4.
2m^{2}-16+16
Combine m^{2} and m^{2} to get 2m^{2}.
2m^{2}
Add -16 and 16 to get 0.
m^{2}-16+m^{2}+16
Consider \left(m-4\right)\left(m+4\right). Multiplication can be transformed into difference of squares using the rule: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}. Square 4.
2m^{2}-16+16
Combine m^{2} and m^{2} to get 2m^{2}.
2m^{2}
Add -16 and 16 to get 0.
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