# How do you multiply (2x+1)(2x+1)?

Aug 5, 2015

$4 {x}^{2} + 4 x + 1$

#### Explanation:

$f \left(x\right) = \left(2 x + 1\right) \left(2 x + 1\right)$

Multiplying each element of the first term by each element of the second will get you

$f \left(x\right) = 4 {x}^{2} + 2 x + 2 x + 1$

$\text{ } = 4 {x}^{2} + 4 x + 1$