### Home > CCA > Chapter A > Lesson A.1.3 > ProblemA-30

A-30.

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

1. $2x+3x+3+4x^2+10+x$

4x2 + (2x + 3x + x) + (10 + 3)
4x2 + 6x + 13

4x2 + 6x + 13

1. $4x+4y^2+y^2+9+10+x+3x$

It may be 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 x2 -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).

5y2 + 6xy + 30