### Home > CCA > Chapter 3 > Lesson 3.3.2 > Problem3-103

3-103.

Multiply each of the following expressions. Show all of your work. Homework Help ✎

1. (x + 3)(4x + 5)$(x+3)(4x+5)$

• Use a generic rectangle to multiply.

• Put the products on the outside of the rectangle.

• Use length times width to find the areas of the small rectangles.

• Write the total area as a sum.

1. $(−2x^2−4x)(3x+4)$

Follow the steps in part (a).

$−6x^3−20x^2−16x$

2. $(3y−8)(−x+y)$

Follow the steps in part (a).

3. $(y−4)(3x+5y−2)$

Follow the steps in part (a).

4x2 + 12x + 5x + 15

4x2 + 17x + 15