Unit 4A Test Review Polynomials

• None of these

• None of these

Add or Subtract to Simplify:
(5x + x² - 4) - (4x - x² + 6)

• 2x² + x + 2 
• x + 2
• 2x² + x - 10 
• x - 10 

Simplify: (3x² + 2x + 1) + (2x² - 4x - 5) - (3x - 1)

• x² + 6x - 5

• 5x² - 5x - 3

• x² + 9x + 5

• 5x² + 5x - 5

What is the leading coefficient of the following polynomial when simplified?

(5x + x² - 4) - (4x - x² + 6)

• -2

• 1

• 2

• 3

Simplify the expression.
-3x²( 7x² - x + 4)

• -21x⁴ + 3x³ -12x²
• 7x² - x + 4 (-3x²)
• 21x⁴ + 3x³ + 12x²
• -12x² + 3x³ -21x⁴

Find the product.
(2x + 3)(x + 5)

• 2x² + 13x + 15

• 3x² + x + 8

• 10x + 15

• 2x² + 3x

Find the product.
(x + 7)²

• x² + 7x + 7x + 49
• x² + 7x + 7
• 7x² + x + 7
• x² + 14x + 49