### Home > GB8I > Chapter 4 Unit 5 > Lesson INT1: 4.1.4 > Problem4-45

4-45.

Simplify each expression below, if possible.

1. $5x(3x)$

Multiply the two terms. Use the Commutative Property of Multiplication to rearrange the terms.

$15x^2$

1. $5x+3x$

Combine like terms.

1. $6x(x)$

1. $6x+x$