Adding and Subtracting Polynomials Mini Review

(3x + 4y - 3z) - (2x - 6y + 7z)

• x + 10y - 10z

• -x +10y - 10z

• x -10y - 10z

• -x -10y - 10z

Simplify the expression.
(4a³ - 8a - 4a²) + (7a³ - 7 - 6a)

• 11a³ - 4a² - 14a - 7 
• 5a³ - 4a² - 14a - 7 
• 5a³ - 4a² - 20a - 7 
• 5a³ - 9a² - 20a - 7

(5x + 2) + (4x + 5)

• 9x -7

• -9x-11

• 9x+7

• x+7

What is (3x² + 2x - 6) - (2x² - 3x + 1)

• 1x² + 5x + 5

• 1x² - 5x - 7

• 1x² + 5x - 7

• 1x² - 5x + 7

(5x + x² - 4) - (4x - x² + 6)

• 2x² + x + 2

• x + 2

• 2x² + x - 10

• x - 10