## College Algebra (10th Edition)

$(4x+1)^2$
$16x^2+8x+1$ To factor the perfect squares, let us remember $(a+b)^2=a^2+2ab+b^2$ and $(a-b)^2=a^2-2ab+b^2.$ Therefore, when we factor our perfect square, we get $(4x+1)^2.$