Polynomials

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

(4x + 7)(3x + 5)

• 12x + 41 + 35

• 12x² + 20x + 35

• 12x² + 41x + 35

• 12x + 20 + 35

(x + 12)(x - 12)

• x² - 144

• x² + 144

• x² + 12x - 144

• x² - 12x + 144

Fully Factor the Following
25x²-81

• (5x-9)²

• (5x+9)(5x-9)

• 25(x-9)²

• (9x+5)(9x-5)

36x² - 49

• (6x+5)(6x-5)

• (6x+7)(6x-7)

• (5x+7)(5x-7)

• (4x+3)(4x-3)

What type of polynomials is this: 3x⁴ + 2x² + 5x ?

• monomial

• binomial

• trinomial

What is the leading coefficient of the following polynomial?
5x²-3x+6

• 2

• -3

• 5

• 6

(4x²+ x) - (x²+ 2x)

• 3x² - x

• 4x² + 2x

• 3x² + 3x

• 3x² + 2x

(x + 3)(x + 7)

• x² + 10x + 21

• x² + 21

• x² + 4x + 21

• x² − 10x + 21

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

• -21x⁴ + 3x³ -12x²

• 7x² - x + 4 (-3x²)

• 21x⁴ + 3x³ + 12x²

• -12x² + 3x³ -21x⁴