Question

PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I WILL AWARD MEDAL!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Part 1: Find the polynomial f(x) that has the roots of –3, 5 of multiplicity 2. (4 points)

Part 2: Explain how you would verify the zeros of f(x). (4 points)
@Loser66 @primeralph @satellite73

Answer 1

@Noura11 @freddy_eighty7 @genius12 @primeralph @tcarroll010 @whpalmer4 @phi @ash2326

Answer 2

@satellite73

Answer 3

@ajprincess

Answer 4

f(x) = (x+3)(x-5)^2 then expand
f(-3) = 0
f(5) = 0

Answer 5

taking into consideration the zero product rule, we have.

\[(x - x_0)(x-x_1)(x-x_2) = 0\] where\[x_i\] are roots.

given the roots we have (x +3)(x-5)(x-5).

The answer is the polynomial obtained by multiplying through

Answer 6

Is that the answer for both parts. LOL please help me I have been studying for 14 hours straight.

Answer 7

@AccessDenied

Answer 8

you could verify them by plugging them into the expanded polynomial.

these are the values for which f(x) = 0 [the roots]

plugging in any other number will not give you zero.

if you don't get zero, you're polynomial or root assumptions are wrong

Answer 9

Ok can you sum up part one and part 2 in one post please.

Answer 10

i think you'll learn a lot if you'd do that yourself :)

Answer 11

Come on please.
I got this as my answer it is just I am so tiered and I HAVE to finish this lesson please help me out.

Answer 12

\[f(x) = (x+3)(x-5)(x-5) = x^3 - 7x^2 -5x + 75\]

Answer 13

So that is part 1 and 2

Answer 14

lol my bad. just part 1. part 2 is pretty concise above though.

Answer 15

you'd plug x = -3 and x = 5 into the expanded polynomial and you should get f(x) = 0.
if you don't something went wrong

Answer 16

Oh no problem let me sum it up.

Answer 17

Part 1

The polynomial is f(x)=(x+3)(x−5)(x−5)=x 3 −7x 2 −5x+75

Part 2

I plugged x = -3 and x = 5 into the expanded polynomial and I should get f(x) = 0.

Answer 18

@Euler271

Answer 19

yes

Answer 20

THANK YOU THANK YOU THANK YOU THANK YOU THANK YOU THANK YOU SOOOOOOOOOOOOOOOOOOOOOO MUCH I have had a question open for 2 hours no one able to answer it THANK YOU THANK YOU I DO NOT KNOW HOW TO THANK YOU

Answer 21

lol i'm glad i could help :)

Answer 22

Just one thing does LOL mean laugh out loud

Answer 23

yes. but it isn't exactly literal lol

i didn't literally laugh this time lol

Answer 24

Yep.

Answer 25

You are probably like how stupid is he.

Answer 26

lol nah

Answer 27

Ok thank you once again.
Can I tag you if I need help in the future.

Answer 28

yes