### Home > PC3 > Chapter 3 > Lesson 3.1.1 > Problem3-18

3-18.

Are the following expressions equivalent? Explain how you know using at least two different methods.

$x^2(x+2)+3(x+2)$ and $(x^2+3)(x+2)$

Multiply out each expression and combine like terms.
Are the resulting expressions the same?