anonymous
  • anonymous
9x^2+9x-28
Mathematics
chestercat
  • chestercat
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saifoo.khan
  • saifoo.khan
quadratic equation.
saifoo.khan
  • saifoo.khan
u want factors or value of x?
anonymous
  • anonymous
factors

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anonymous
  • anonymous
Yes, use the quadratic equation.
anonymous
  • anonymous
Again that. How we can use quadratic equation ??? He don't says 9x^2+9x-28=0! he just says 9x^2+9x-28! This is nothing guys!
anonymous
  • anonymous
thats what the problem is!
anonymous
  • anonymous
It should be set to 0, you are correct.
anonymous
  • anonymous
the better thing that you can do is this: 9x(x-9)-28.
anonymous
  • anonymous
*** 9x(x+1)-28
anonymous
  • anonymous
how will that help us?
anonymous
  • anonymous
You can't do anything else,only factorization.
anonymous
  • anonymous
Oh, I see! I thought it's finding x. Sorry, my bad >_< Thanks Alexis =)
anonymous
  • anonymous
9x^2 + 9x - 28 (ac = 9*-28 = -252) 9x^2 + 21x - 12x - 28 3x(3x + 7) -4(3x + 7) (3x - 4)(3x + 7)
anonymous
  • anonymous
THANK YOU!!!
anonymous
  • anonymous
u r welcome.....☺☻☺
anonymous
  • anonymous
:) can you help me with some more?

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