anonymous
  • anonymous
-4√(x+9)=20
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
\[\LARGE -4\sqrt{x+9} = 20\]
anonymous
  • anonymous
Help, please?
myininaya
  • myininaya
Divide both sides by -4 to get the radical containing x by itself.

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myininaya
  • myininaya
Then ask yourself can you ever have the square root of something have a negative output?
anonymous
  • anonymous
I don't know what I would get if I did that because I don't know how to divide with a square root or anything like that...
anonymous
  • anonymous
@pkjha3105 ? Any help please?
Fools101
  • Fools101
Hi ^_^ are we trying to fine x?
anonymous
  • anonymous
no soluction
anonymous
  • anonymous
x ll hve imaginary value.....there is no real sol. of x..
Fools101
  • Fools101
that was i was thinking that why i was asking!
anonymous
  • anonymous
Yes trying to find X & so there's no solution? Why?
Fools101
  • Fools101
So let's say you have an equation that's 2x=2x. Of course that one is obvious. When you divide by x (you're not supposed to do that because you lose a 0), you get 2=2, which means all solutions work. A little less obvious is 64x=(4^2)*4x. That will also get you 64=64 or x=x depending on which way you divide. This also means all solutions. I think!

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