If \(a\) \(=30\) , \(b\) \(=100\) , \(m\) \(=\) 4, and \(n\) \(=\) 7, then evaluate the value of \(-\) using the identity.
Answer:
The product is expanded using the identity of \((a+m)(b+n)\) \(=\) .
The value of \(=\)
The product is expanded using the identity of \((a-m)(b-n)\) \(=\) .
The value of \(=\)
The value of \(-\) \(=\)