addition and subtraction of polynomials

(5 + 3d) + (d - 12) =

• 4d + 7
• 4d - 7
• 7d - 4
• 4d - 17

(3h - 4) - (8h - 2) =

• -11h - 2
• - 5h + 2
• - 5h - 2
• - 5h - 6

(7x - x²) - (9x² + 2x) =

• 10x² + 5x

• -10x² - 5x

• - 5x + 10x²

• -10x² + 5x

Find the sum.
(3y² + y³ - 5) + (4y² -4y + 2y³ + 8)

• 3y³ + 7y² - 4y + 3
• 4y² + 3y³ - y + 3
• -y⁴ + 2y³ -y - 4
• 4y³ + 3y² -3y + 1

Simplify the expression.
(4n⁴ - 8n + 4) - (8n² + 4n⁴ + 1)

• -8n² - 8n + 3 
• -7n² - 8n + 3 
• -6n² - 8n + 3
• -7n² - 4n + 3

Simplify the expression.
(4n⁴ - 8n + 4) - (8n² + 4n⁴ + 1)

• -8n² - 8n + 3 
• -7n² - 8n + 3 
• -6n² - 8n + 3
• -7n² - 4n + 3

Simplify each expression.
(4n⁴ - 8n + 4) - (8n² + 4n⁴ + 1)

• -8n² - 8n + 3 
• -7n² - 8n + 3 
• -6n² - 8n + 3
• -7n² - 4n + 3

(9h + 8k) + (6h + k) =

• 15h + 9k
• 15h + 8k
• 14h + 9k
• 14h + 8k

Find the sum.
(3y² + y³ - 5) + (4y² -4y + 2y³ + 8)

• 3y³ + 7y² - 4y + 3
• 4y² + 3y³ - y + 3
• -y⁴ + 2y³ -y - 4
• 4y³ + 3y² -3y + 1