Polynomial Expressions Like and Unlike Terms

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4
• 2a + 2b + 4
• 8ab
• 4ab + 4

Simplify the expression: 3x + 2x

• 5x
• x
• 6x
• 5

-r -10r

• 11r
• -11r
• 9r
• -11

-6k + 7k=

• k
• -k
• 12k
• -12k

Simplify the following expression:
-10x + 15 - 3x + 2

• 13x² + 17
• -13x² + 13
• -13x + 17
• -7x + 17

-4x - 10x

• -14
• 6x
• -6x
• -14x