Question

help asap please? I give medal! Algebra 2! Picture attached

Answer 1

what is it?

Answer 2

i am not sure

Answer 3

its right there^

Answer 4

@campbell_st @abbie @e.mccormick @Isaiah.Feynman

Answer 5

@jdoe0001 @thomaster

Answer 6

my sister has

Answer 7

well... I'd appreciate any help

Answer 8

What number? @cupcake111

Answer 9

both #3 and #4

Answer 10

I'm not very sure of #4

Answer 11

:) thanks!

Answer 12

Know what a zero is?

Answer 13

not really

Answer 14

Well a zero is the values of x when y is zero. That's algebraical. Graphically, the zeros are the points where the graph intersects the x axis, this is also known as the x intercepts. So try to find the zeros using the graphical definition.

Answer 15

-5, -1, 4, 7

Answer 16

Correct.

Answer 17

so that's all we have to do for part 1?

Answer 18

are you there

Answer 19

Yes. That's all.

Answer 20

I will be off for a while..

Answer 21

I need help for part 2 tho...

Answer 22

nooo! dont leave

Answer 23

@austinL

Answer 24

@phi

Answer 25

@Jordan7 do you know this?

Answer 26

the number of zeros has to add up to 7 ( because you have a 7 degree polynomial)
because there are only 4 obvious zeros, some of them are repeated.

Answer 27

To find which roots are repeated, see item 4. here:
http://www.themathpage.com/aPreCalc/point-inflection.htm

Answer 28

That shows you that the roots at -5 and +4 are repeated roots.

We have a total of 7 roots
we have 2 roots (one at -1 and +7) that are not repeated. That leaves 5 roots to account for.

that means we have to figure out how many roots are repeated at -5 and at +4