Answer
$(2a+b)^{2}$=$4a^{2}$+4ab+$b^{2}$
Work Step by Step
To simplify the product $(2a+b)^{2}$ we'll apply the rule that states that
$(x+y)^{2}$=$x^{2}$+2xy+$y^{2}$ and set x=2a and y=b
Therefore,
$(2a+b)^{2}$ =$(2a)^{2}$+2(2a)(b)+$b^{2}$
=$4a^{2}$+4ab+$b^{2}$
