Test Review: Combine like terms/Distribute/Rational V Irrational

• unlike
• like

Simplify by combining like terms:

5a + 2b - 3a + 4

• 8a + 2b + 4

• 2a + 2b + 4

• 8ab

• 10ab + 4

Combine like terms: n -10 + 9n - 3=

• 9n - 7

• 10n - 7

• 9n - 13

• 10n -13

Which of the terms could be combined in the following expression:

3x + 7 - 9x + 24y + 2x²

• 7, 24y

• 3x, 9x

• 3x, -9x

• 3x, -9x, 2x²

3(2c - 5)

• 6c - 15

• 6c + 15

• -6c + 15

• -6c - 15

-4(3k - 7)

• -12k + 7

• -12k - 7

• -12k + 28

• -12k - 28

4 - (x + 7) + 11x

• -12x +8

• 10x - 3

• 17x -4

• 15x + 7

A variable can be _______?

• Any number

• Any letter of the alphabet

• only X

• only 1

What are coefficients?

• The letters in an expression
• The numbers without a letter
• The same as constants
• The number before a letter 

x terms and y terms can be added or subtracted together.

• True

• False