anonymous
  • anonymous
Part 1: Solve each of the quadratic equations below. Show your work. x2 – 36 = 0 and x2 = 8x – 12 Part 2: Describe what the solution(s) represent to the graph of each. Part 3: How are the graphs alike? How are they different?
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
K for part 1, all you have to know for the first problem is what factors when multiplied eqaul -36, do you know that? :)
anonymous
  • anonymous
ummm i want to say... 16 x 2
anonymous
  • anonymous
-16

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anonymous
  • anonymous
That doesn't equal -36 when multiplied, but -6*6 does :)
anonymous
  • anonymous
xd brain fart. i was thinking of some thing else.
anonymous
  • anonymous
so how would it be solved?
anonymous
  • anonymous
Now all you would do is (x-6)(x+6) to factor the quadratic equation. Wait is that what you needed?
anonymous
  • anonymous
oh and how would you do the 2nd one?
anonymous
  • anonymous
K so we have x^2= 8x-12. We can make this x^2-8x+12=0
anonymous
  • anonymous
Now you need to find out what factors when multiplied to 12, add up to -8. Can you think of anY? :)
anonymous
  • anonymous
ohhh!! 4 -4?
anonymous
  • anonymous
sooo....(x+4) (x-4)
anonymous
  • anonymous
Not necessarily. 4*-4=-16. We need two numbers like -6*-2 that equal 12 and add up to -8 :) Since those two numbers are it we can factor our quadratic equation as (x-6)(x-2)
anonymous
  • anonymous
oh....jumped the gun there. lol but thanks!!
anonymous
  • anonymous
No problem :)

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