In previous lessons, we have looked at multiplying a polynomial by a monomial.
\(a(b + c)\)
\(=\)
\(a(b)\)
\(+\)
\(a(c)\)
Today, we will multiply a polynomial by a polynomial.
\((a+b)(c+d)\)
\(a(d)\)
\(b(c)\)
\(b(d)\)
Find a simplified expression for the area contained by the picture frame.