Mathematics
9 Online
OpenStudy (danielbarriosr1):
Please help
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OpenStudy (danielbarriosr1):
\[\sqrt{3}+1=-4\]
OpenStudy (anonymous):
no
OpenStudy (danielbarriosr1):
\[\sqrt{3}=-5\]
OpenStudy (danielbarriosr1):
Now what?
OpenStudy (nubeer):
what you have to do with it?
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OpenStudy (danielbarriosr1):
Simplify
OpenStudy (anonymous):
the square root of three is not equal to minus five
OpenStudy (nubeer):
and dont think squaring any number would give u a negative result
OpenStudy (danielbarriosr1):
Oh wait my bad
\[\sqrt{3x}=-5\]
OpenStudy (nubeer):
makes more sensse now...
square both sides..
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OpenStudy (danielbarriosr1):
3x=25
OpenStudy (danielbarriosr1):
x=25/3
OpenStudy (nubeer):
yup..
OpenStudy (anonymous):
nope
OpenStudy (danielbarriosr1):
What it it then?
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OpenStudy (anonymous):
the square root symbol means the positive root
OpenStudy (anonymous):
for example \(\sqrt{36}=6\)
OpenStudy (anonymous):
so it is not possible for the left hand side of your equation to be negative
OpenStudy (anonymous):
in other words you cannot solve \(\sqrt{3x}=-5\)
OpenStudy (anonymous):
so don't begin
don't square anything
don't do anything at all
just say no
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OpenStudy (nubeer):
hmmm as far as i remember
x^2 = 36
taking square root gives us one negative and one positive root .. doesn't it?
OpenStudy (danielbarriosr1):
I can't say no
OpenStudy (danielbarriosr1):
Guateber... It was right 25/3 thanks nubeer
OpenStudy (anonymous):
???
OpenStudy (danielbarriosr1):
I don't know
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OpenStudy (danielbarriosr1):
It just said it was right
OpenStudy (anonymous):
\(\sqrt{25}=5,-\sqrt{25}=-5\)
OpenStudy (anonymous):
lol really? on line math = scam
OpenStudy (nubeer):
lol
OpenStudy (nubeer):
maybe just thinking too deeply :P
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OpenStudy (danielbarriosr1):
This things are driving me crazy
OpenStudy (anonymous):
i am sure
25 has two square roots, \(5\) and \(-5\)
the symbol \(\sqrt{25}\) means the positive root, namely \(5\)