CPM Homework Banner

Home > INT1 > Chapter 3 > Lesson 3.3.1 > Problem 3-117

3-117.

Multiply each of the following expressions. Show all of your work.  

  1. Use a generic rectangle to multiply.  A 2 by 2 rectangle

    Put the products on the outside of the rectangle. Added to the rectangle, the following labels: left side, top, + 3, left side, bottom, x, bottom side, left, 4, x, bottom side, right, +, 5

    Use length times width to find the areas of the small rectangles. Labels added to the interior of the rectangle as follows: top left, 12 x, top right, 15, bottom left, 4 x squared, bottom right, 5 x.

    Write the total area as a sum.

  2. Follow the steps in part (a).

  3. Follow the steps in part (a).

  4. Follow the steps in part (a).