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 = 2; f(x) = 5x^4 + 4x^3 - 2x^2 + 2x + 4; Upper bound?

Answer 1

help meeeee

Answer 2

I'm logging off now.

Answer 3

@abb0t okay.........:(

Answer 4

@jim_thompson5910 you are back!!

Answer 5

are you familiar with synthetic division?

Answer 6

yes!

Answer 7

ok what do you get when you perform synthetic division?

Answer 8

5x^3+14x^2+26x+54 with 112 remainder!

Answer 9

very good

Answer 10

notice how each coefficient of the quotient is positive

Answer 11

yes!

Answer 12

so this means that you have an upper bound

IF you got alternating signs, then you would have a lower bound

anything else would mean it's neither

Answer 13

ohhhhh okay!! thankyou!! you are always the bestt:)

Answer 14

np