anonymous
  • anonymous
Determine if the expression is a perfect square and if it is, factor it. a2 – 8a – 16 A. (4a + 1)2 B. (a + 4)(a – 4) C. (a – 4)(a – 4) D. not a perfect square
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
jagr2713
  • jagr2713
Hmm what do you think?
anonymous
  • anonymous
|dw:1432746281982:dw|

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anonymous
  • anonymous
anonymous
  • anonymous
anonymous
  • anonymous
jagr2713
  • jagr2713
hold on b.c the answer i am getting is not there.
anonymous
  • anonymous
oh ok
anonymous
  • anonymous
anonymous
  • anonymous
D it is
jagr2713
  • jagr2713
OHHH i see mot a perfect square because of -16 A perfect square must have a positive number at the end that above equals = (A+B)^2
anonymous
  • anonymous
what do you think? @jagr2713
jagr2713
  • jagr2713
@aegantiger It is better to guide the user to an answer rather than doing all the work yourself. We discourage giving out answers without letting the asker at least take some part in the analysis - the aim of this site is to teach. Please refer to our code of conduct at http://openstudy.com/code-of-conduct for more information. Thank you.
jagr2713
  • jagr2713
but @ninowletonzalez06 so we plug it in (a+b)^2 and get a^2 -8a + 16 = (a -4)^2
jagr2713
  • jagr2713
So you get it?
anonymous
  • anonymous
okay!
jagr2713
  • jagr2713
So you get it ?
anonymous
  • anonymous
kind of?
jagr2713
  • jagr2713
What are you stuck on. i barely get myself but i can explain some :D
anonymous
  • anonymous
how to determine if it is a perfect square, and if it is i need to factor it?
anonymous
  • anonymous
anonymous
  • anonymous
so it is D?
jagr2713
  • jagr2713
Well to be a perfect square then the end must be positive and D is correct :D

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