Adding and subtracting polynomials

Find the difference. 
(3- 2x + 2x²) - (4x -5 +3x²)

• x_² + 6x + 8
• 2x² + 5x - 7
• -x² -6x + 8
• -2x² + 11x - 4

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

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

(4x³-5x²+3x)+(-2x³-x²+6x)

• 2x³-6x²-9x
• 2x³+6x²+9x
• -2x³-6x²+9x
• 2x³-6x²+9x

Find the sum.
(2x² + 5x - 7) + ( 3 - 4x² + 6x)

• 2x² + 3x +1
• -2x² - 11x -4
• 2x² + 5x -7
• -2x² + 11x -4

Simplify the expression:
(4v³ + 3v - 8v⁴) + (4v - 8v⁴ - 7)

• -17v⁴ + 4v³ + 2v - 7
• -16v⁴ + 4v³ + 10v - 7
• -16v⁴ + 4v³ + 7v - 7
• -16v⁴ + 4v³ + 2v - 7

Find the difference.
(x³ - x² + 4) - (3x³ - 2x² + 3)

• -2x³ - 3x² + 7
• -2x³ + x² + 1
• 2x³ - 3x³ - 1
• 4x³ - 3x² + 7

Simplify.

(8u³ + 2u² + 7) + (3u³ – 7u + 8)

• 5u³ – 7u² + 2u – 15

• 5u³ + 2u² – 7u + 15

• 15 – 7u + 2u² + 11 u³

• 11u³ + 2u² – 7u + 15

Add the following polynomials:

(12x² + 3x⁴ - 6x - 2) + (-3x⁴ + 5x + 9 - 7x²)

• 5x² - x + 7

• 6x⁴ + 5x² - x + 7

• 6x⁴ + 5x² - x + 11

• 5x² + 11x + 11

Simplify.

(–7x – 5x⁴ + 5) – (–7x⁴ – 5 – 9x)

• 2x⁴ + 2x + 8

• –14x⁴ – 10x + 10

• –14x⁴ + 10x + 10

• 2x⁴ + 2x + 10

Subtract the following polynomials:

(-5x² + x³ - 2x + 3) - (-5x² -x³ + 4x + 8)

• 2x³ - 6x + 11

• 2x³ - 6x - 5

• 2x³ - 10x² - 6x - 5

• - 10x² - 6x - 5