anonymous
  • anonymous
Which value(s) of x should be excluded for the polynomial? Here are the options for the answer. A. 3 B. 3 and -3 C. 4 D. 4 and -4 I will attach the polynomial in a comment.
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
Here is the Polynomial
1 Attachment
amistre64
  • amistre64
thats not a polynomial :)
anonymous
  • anonymous
:P Thats strangeee thats the exact question >.< lol

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amistre64
  • amistre64
the answer is A
anonymous
  • anonymous
Would u mind explaining how u got that? :)
amistre64
  • amistre64
a rational expression is not defined as a polynomial; something to do with the definitions lol
amistre64
  • amistre64
the bottom poly can be factored into what?
anonymous
  • anonymous
-3 and 3 rite?
anonymous
  • anonymous
oh wait -3 and -3
amistre64
  • amistre64
not what are the roots; but what is its factored form? (x )(x )
anonymous
  • anonymous
ohhhhh (x - 3) (x - 3)
amistre64
  • amistre64
now we can see what makes this turn to 0 and be bad for a denominator.... x = 3 right?
anonymous
  • anonymous
Ahh! ya i see overall what u did :)
anonymous
  • anonymous
Gotcha! ok then thanks :)
amistre64
  • amistre64
youre welcome :)
anonymous
  • anonymous
So then if you simplify the attached file , what would it be?
amistre64
  • amistre64
it wouldnt simplify it would just change from fatored to unfactored forms
amistre64
  • amistre64
(x+4)(x-4) --------- (x-3)(x-3)
anonymous
  • anonymous
Right but then what would that simplify to? >.< sorry im confused there is no option for that answer :)
amistre64
  • amistre64
in order to simplify and equation; you have to be able to reduce it down by cross out like factors top and bottom; there are none in this case
amistre64
  • amistre64
2x 1 --- simplifies --- 4xy 2y
anonymous
  • anonymous
Thats strange here are the options for simplifying it gives me i will attach them in files :)
amistre64
  • amistre64
this one....doesnt simplify; its as basic as you can get it
anonymous
  • anonymous
amistre64
  • amistre64
1 and 4 are negative of each other so they simply go to -1
anonymous
  • anonymous
Yes and so i assumed it would be the file labeled three would that be rite? :)
amistre64
  • amistre64
3 doesnt simplyfy so much as just factors out 1 ------ 3(2x-3)
amistre64
  • amistre64
number 2 simplifies; maybe lol
amistre64
  • amistre64
-9 3 ------ = ----- -6x+9 (2x-3)
anonymous
  • anonymous
Ohhh!!! ok! ok! :D thankies!! :) lol
amistre64
  • amistre64
youre welcome :)

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