Practice!

Sample Problem

Multiply the two binomials by using the box method

(x + 2)(5x – 1) =

Solution

 

5x

-1

x

5x2

-x

2

10x

-2

(x + 2)(5x – 1)

            = 5x2x + 10x – 2

            = 5x2 + 9x – 2