polynomials

What is the degree of the polynomial?
x³y² - 7x²y + 3

• A
  1
• B
  3
• C
  5
• D
  7

Combine Like Terms:
2x - 4x + 12x²

• 12x² - 2x
• 10x
• 10x²
• 12x² + 2x

Combine like terms:
5x²+ x - x²+ 4x

• 6x² + 5x
• 4x² + 3x
• 4x² + 5x
• 5x² + 5x

Add the following polynomials: 
(6x + 4x⁴ - 3x²) + (7x⁴ + 5x² + 8x)

• 11x⁴  + 2x² + 14x
• 16x⁴  + x² + 14x
• 11x⁴  + x² + 14x
• 11x⁴  + 2x² + 10x

Add the following polynomials:
 (5x + 2) + (4x + 5)

• 9x -7
• -9x-11
• 9x+7
• x+7

Add to Simplify:
 (4x - 2x³) + (5x³ - 4x + 5)

• 3x³ + 5
• 3x³ + 8x + 5
• 3x² + 5
• 7x³ + 8x + 5

Subtract the following polynomials:
(3x²-3x+2) - (x²-2x+1)

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

Find the product:
-3x²(5x² + 3x)

• -15x⁴ - 9x²
• -15x⁴ - 9x³
• 15x⁴ - 6x³
• -15x⁴ + 9x³

Find the product:
5xy(6x - y)

• 11x² - y²
• 30x² + y²
• 30x²y - 5xy²
• 11x²y + 5x²y²

Find the product:
2x( -2x - 3)

• -4x - 3
• x² - 3
• -4x² - 6x
• -4x - 6