Question

Use synthetic division to determine whether the number k is an upper or lower bound (as specified) for the real zeros of the function f.

k = 4; f(x) = 2x^3 - 2x^2 - 3x - 5; Lower bound?

Answer 1

Yes or no are the answer choices

Answer 2

@Loser66

Answer 3

So, you have to solve for the zeros of the function. What are they?

Answer 4

I'm honestly not sure how to find them

Answer 5

use demos graph to see where they cut x-axis

Answer 6

(2.2,0)

Answer 7

So would the answer be no since it's (2.2,0) and 4 would be a higher bound and not lower bound?

Answer 8

we don't have 0. please check

Answer 9

what do you mean? it cut the x-axis at 2.2

Answer 10

but you can use it. now find f(0) =?

Answer 11

replace 0 into f(x) , what do you get?