### Home > ACC7 > Chapter 2 Unit 1 > Lesson CC3: 2.1.3 > Problem2-29

2-29.

Copy and simplify the following expressions by combining like terms. Using or drawing sketches of algebra tiles may be helpful.

1.  $2x+3x+3+4x^2+10+x$

$4x^2+(2x+3x+x)+(10+3)$
$4x^2+6x+13$

$4x^2+6x+13$

1.  $4x+4y^2+y^2+9+10+x+3x$

It may helpful to rearrange the terms so that all like terms are next to one another before simplifying. Remember to double check your work.

1.  $2x^2+30+3x^2+4x^2+14+x$

Try thinking of these as algebra tiles. Can you combine $x^2$-tiles with $x$-tiles or unit tiles? If it helps you, you can use algebra tiles to help you solve this problem.

1.  $20+5xy+4y^2+10+y^2+xy$

Follow the steps outlined in part (a) and the hints from parts (b) and (c).

$5y^2+6xy+30$

Use the tiles in the eTool below to write the algebraic expression.
Click the link at right for the full version of the eTool: Algebra Tiles eTool (CPM)