Solving Polynomials for Real Solutions

What are the solutions to the polynomial equation?
Choose ALL that apply.

• 2

• -2

• -3

• 3

x³ - 343 = 0 (Make sure to select all answers)

• x = 19

• x = -7

• x = 7

• No Real Solution

3x³ - 15x² = -x + 5 (Make sure to select all answers)

• x = 1/3

• x = -1/3

• x = -5

• x = 5

x⁵ - 8x³ + 7x = 0 (Make sure to select all answers)

• x = 0

• x = Square root of 7

• x = negative square root of 7

• x = -1

• x = 1

x⁴ + 14x² = -45 (Make sure to select all answers)

• x = 9

• x = -9

• x = -5

• x = 5

• No Real Solution

x⁴ = 256 (Make sure to select all answers)

• x = 16

• x = -16

• x = 4

• x = -4

• No Real Solution

x⁴ + 36 = 0 (Make sure to select all answers)

• x = 6

• x = -6

• x = 0

• No Real Solution

Factor using Factoring like a Quadratic:

k⁴ - 10k² - 39

• (k² - 13)(k² + 3)

• (k - 13)(k + 3)

• (k² + 15)(k² - 3)

• (k + 13)(k - 3)

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

• (x² - 4)(2x + 5)

• (2x - 5)(x² + 4)

• (2x² - 4)(x + 5)

• (x - 2)(x + 2)(2x + 5)

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

• 3, √5 

• 3, √5, -√5

• -3, √5, -√5

• -3, 5i, -5i