How do you foil (4x+5) (x+1)?

Aug 8, 2015

$\left(4 x + 5\right) \left(x + 1\right) = 4 {x}^{2} + 9 x + 5$

Explanation:

The FOIL method shows the order in which the terms of two binomials are to be multiplied. After multiplying the terms, combine like terms and add them.

$\left(4 x + 5\right) \left(x + 1\right)$ =

$4 x \cdot x + 4 x \cdot 1 + 5 \cdot x + 5 \cdot 1$ =

$4 {x}^{2} + 9 x + 5$