APPC 1.5A video check

What is 'a' called if p(a) = 0 for a polynomial function p?

• A factor

• An x-intercept

• A zero or root

• A linear factor

What are the x-intercepts of the function g(x) = x^3 - 2x^2 - 8x?

• x = -4, x = 0, x = 2

• x = -2, x = 0, x = 4

• x = -2, x = 2, x = 4

• x = -4, x = 2, x = 0

What are all intervals on which the polynomial function h(x) = x^2 - 2x - 3 is greater than or equal to 0?

• (-infinity, -1) U (3, infinity)

• [-1, 3]

• (-infinity, -1] U [3, infinity)

• (-3, 1)

Are you enjoying the video lesson?

• Yes

• No

For the polynomial function p(x) = (x - 2)(x - 5)^4(x + 7), what are all intervals on which p(x) <= 0?

• [-7, 2]

• (-7, 2)

• [-7, 2] U {5}

• (-7, 2) U {5}

A polynomial has a degree of 8. It has real zeros at x = -10, x = 5, and x = 16, with x = 5 having a multiplicity of 2. How many non-real zeros does the polynomial have?

• 0

• 2

• 4

• 8