Simplifying Expressions

Which of the following are examples of like terms?

• 2 and 2x

• y³ and x³

• y and x

• -3x and 3x

4x+2x+3x

• 10x

• 9x

• 11x

• 8x

7(3x)

• 20x

• 10x

• 73x

• 21x

8y+4x+6y

• 14y+4x

• 48y+4x

• 8y+4x+6y

• 12xy+6y

4(7x+5y)

• 28x+5y

• 11x+9y

• 7x+20y

• 28x+20y

4(x+3) - 5

• 4x + 7

• 4x - 2

• 4x - 17

• 4x + 2

6(7 + x) + 5x

• 6x + 13

• x + 42

• 6x + 42

• 11x + 42

3(2 + x) + 6x - 4

• 6x + 5

• 9x + 1

• 9x + 2

• 3x + 8

3x²+2x²

• 5x²

• 6x²

• 5x⁴

• 6x⁴

(x² – 3x + 1) + (2x – 4x²) 

• -3x²- x+1

• -3x² -2x + 4

• 3x² -7x + 1

• 3x² -5x + 1