Mathematics
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OpenStudy (anonymous):
@amberk123 @myininaya
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OpenStudy (anonymous):
@cookiimonster27 Instead of re-drawing it you can also right click and save the image then click the attach file button.
OpenStudy (anonymous):
is it the same question hun
OpenStudy (anonymous):
|dw:1416257165856:dw|
myininaya (myininaya):
that one is on the outside of the sqrt right?
OpenStudy (anonymous):
Whats the solution
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OpenStudy (anonymous):
\[\sqrt{3x-5}=\sqrt{4x-3-1}\]
OpenStudy (anonymous):
I Think that you have to do the same to each side.
OpenStudy (anonymous):
\[\sqrt{3x-5}=\sqrt{4x-4}\]
OpenStudy (anonymous):
yes thats it @amberk123
myininaya (myininaya):
\[\sqrt{3x-5}=\sqrt{4x-4}\]
see what happens if you square both sides
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OpenStudy (aum):
Are you sure the minus 1 on the right hand side is not outside the radical sign?
OpenStudy (anonymous):
@aum yes im sure
OpenStudy (anonymous):
oh wait your its its outside @aum
OpenStudy (aum):
Aha! It is too simple if it is inside!
myininaya (myininaya):
so then we have this:
\[\sqrt{3x-5}=\sqrt{4x-3}-1 \] ?
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OpenStudy (anonymous):
yes
myininaya (myininaya):
still need to square both sides
myininaya (myininaya):
what do you get when you square both sides?
OpenStudy (anonymous):
how do i do it ?
myininaya (myininaya):
\[(\sqrt{3x-5})^2=(\sqrt{4x-3}-1)^2 \]
this gives you?
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myininaya (myininaya):
for the right hand side please do not say (a-b)^2=a^2-b^2
because it doesn't
(a-b)^2=a^2-2ab+b^2
OpenStudy (anonymous):
i dont know how to do it
OpenStudy (anonymous):
sqrt(3 x-5)-sqrt(4 x-3) = -1
OpenStudy (anonymous):
how ? @amberk123
OpenStudy (anonymous):
okay i will show u
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OpenStudy (anonymous):
\[\sqrt{3x-5+1}=\sqrt{4x-3}\]
\[\sqrt{3x-5}-\sqrt{4x-3=-1}\]
myininaya (myininaya):
Lets have cookie work for the solution a little.
myininaya (myininaya):
first of all do you know what this equals cookie
\[(\sqrt{9})^2=\]?
myininaya (myininaya):
the reason I'm asking is because this is going to go right back to how to answer
\[(\sqrt{3x-5})^2\]
OpenStudy (anonymous):
she offline