Question

how do you factor the expression 4ac+2ad+2bc+bd

Answer 1

maybe start by factoring 2a out of the first two and b out of the second two

Answer 2

\[2a(2c+d)+b(2c+d)\]

Answer 3

then note that each term has a common factor of
\[2c+d\] so you can factor again aas
\[(2a+b)(2c+d)\]