Solving Cubic Polynomials

Factor completely:
2x³ + 5x² - 8x - 20

• (x² - 4)(2x + 5)

• (2x - 5)(x² + 4)

• (2x² - 4)(x + 5)

• (x - 2)(x + 2)(2x + 5)

Solve the polynomial function by factoring P(x) = x³ -3x²-5x+15

• 3, √5

• 3, √5, -√5

• -3, √5, -√5

• -3, 5i, -5i

Tags

CCSS.HSF-IF.C.7C

Find all zeros for the polynomial
P(x) = x³ -3x²-5x+15

• 3, √5 

• 3, √5, -√5

• -3, √5, -√5

• -3, 5i, -5i

Factor Completely:

2n³ + 7n² - 2n - 7

• cannot be factored

• (n - 1)²(2n + 7)

• (n² - 1)(2n + 7)

• (n + 1)(n - 1)(2n + 7)

Answer the following:

• A

• B

• C

• D

x³ + 216 = 0

Tags

CCSS.8.EE.A.2

Which equation is an example of a cubic equation?

• x^3 - 27

• x^2 + 4x + 3 = 0

• x^2 = 121

• 2x^2 - 4x = 3x^2 + 3

Tags

CCSS.8.EE.C.7B

Tags

CCSS.HSA-REI.B.4B

How many real zeros does the function have?

• None

• 2

• 3

• 4

Tags

CCSS.HSF-IF.C.7C

What are the solutions?

• x = 0, 2, 4

• x = 0, -2, -4, 4

• x = 0, 2, -2, 4

• x = 2, -2, 4

Tags

CCSS.HSF-IF.C.7C