Combining Like Terms & Review

m and m² are like terms

• False

• True

-8mn and 1.2mn are like terms

• True

• False

Combine the like terms:

3a + a² + 5a - 10a²

• 8a + 9a²

• -2a²

• 8a - 9a²

• 4a - 5a²

Combine like terms:

z² + 5z - 10 -8z² - 4

• -7z² + 5z - 14

• -2z² - 6

• 6z - 8z² - 14

• 9z² + 5z - 14

Which of the following are like terms?

3x + 7 - 9x + 24y + 2x²

• 7 and 24y

• 3x and 9x

• 3x and -9x

• 3x, -9x, and 2x²

Simplify by combining like terms:

2r + 2 + 5r - 2 + r

• 8r

• 12r

• 8r - 4

• 7r + 4 + r

Combine like terms:

5x + 3y + 5 + 4x + 3y + y + 8

• 6x + 2y + 2

• x + 7y + 12

• 25x + 2y + 3

• 9x + 7y + 13

Write an expression for the perimeter of the rectangle. (Add all sides)

• 5x + 4

• 5x - 4

• 10x - 8

• 10x + 16

Write an expression for the perimeter of the triangle. (Add all sides)

• 5m + 14

• 5m + 2

• 3m + 5

• 5m² - 14m