CPM Homework Help : CAAC Problem 5-71

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Home > CAAC > Chapter 5 > Lesson 5.2.1 > Problem 5-71

5-71.

Simplify the expressions below. You may want to draw or visualize algebra tiles to help you rewrite these problems. Homework Help ✎
1. (2x² + 3x + 5) + (x² + 2x + 8)
2. (3x² + 8x + 1) + (2x² + 8x + 4)
3. (3x² + 5x + 7) − (4x² + x + 1)
4. (x² + 9x + 8) − (x² + 4x + 8)
5. (7x² + x + 10) − (3x² + 12x + 12)

Hint (a):

Rearrange and put like terms together.
2x² + x² + 3x + 2x + 5 + 8

Hint 2(a):

Combine like terms.

Answer (a):

3x² + 5x + 13

Hint (b):

Follow the steps in part (a).

Hint (c):

How does the negative outside the parentheses change what is inside of it?

Hint 2(c):

Follow the steps in part (a).

Answer (c):

−x² + 4x + 6

Hint (d):

Follow the steps in part (c).

Answer (d):

5x

Hint (e):

Follow the steps in part (c).

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