anonymous
  • anonymous
What would y be? ^3√(3y+3)=3
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
katieb
  • katieb
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anonymous
  • anonymous
Well the idea is to isolate y right? What would be your first step?
anonymous
  • anonymous
You have a cube root. How would you get rid of that?
anonymous
  • anonymous
For instance, if you have a square root you have to square to get rid of the square root.

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More answers

anonymous
  • anonymous
@francescazares2012 : You there?
anonymous
  • anonymous
yes
anonymous
  • anonymous
So I would cube both sides?
anonymous
  • anonymous
Yep!
anonymous
  • anonymous
Is my answer 2?
anonymous
  • anonymous
Good job!
anonymous
  • anonymous
It didn't work. :/
anonymous
  • anonymous
the answer is 8! :D
anonymous
  • anonymous
Ohh wait. I am dumb.
anonymous
  • anonymous
3^3 is 27 >.< .
anonymous
  • anonymous
thanks for your help! I was having so much trouble
anonymous
  • anonymous
Yeah it's 8 :P .
anonymous
  • anonymous
could you help me with another?
anonymous
  • anonymous
Sure.
anonymous
  • anonymous
√(x+10)=x+10
anonymous
  • anonymous
Okay, square both sides again :) .
anonymous
  • anonymous
okay so now i have x+10=(x+10)^2
anonymous
  • anonymous
Can you expand the (x+10)^2 ?
anonymous
  • anonymous
yes
anonymous
  • anonymous
|dw:1355462739047:dw|
anonymous
  • anonymous
okay I am a bit confused
anonymous
  • anonymous
With?
anonymous
  • anonymous
what I am supposed to do
anonymous
  • anonymous
Okay so we have: |dw:1355462917095:dw|
anonymous
  • anonymous
|dw:1355463044826:dw|
anonymous
  • anonymous
okay I sort of see where this is going
anonymous
  • anonymous
You realize we have to foil this correct?
anonymous
  • anonymous
|dw:1355463252789:dw|
anonymous
  • anonymous
okay
anonymous
  • anonymous
What did you get?
anonymous
  • anonymous
-10 and -9?
anonymous
  • anonymous
Very good! :) .
anonymous
  • anonymous
wow!
anonymous
  • anonymous
Algebra isn't that bad once you get the hang of it :) .
anonymous
  • anonymous
I have a algebra final tomorrow. I am pretty nervous.
anonymous
  • anonymous
Haha, you will be fine ^_^ .
anonymous
  • anonymous
I am working on this problem right now and I got 3 but it says it's wrong. √(6a-2)=16
anonymous
  • anonymous
not 16 I meant -4
anonymous
  • anonymous
so √(6a-2)=-4
anonymous
  • anonymous
So square both sides :) .
anonymous
  • anonymous
Keep the negative inside the brackets when you square, so it would be like (-4)^2 .
anonymous
  • anonymous
but wouldn't that be 16?
anonymous
  • anonymous
Yep :) .
anonymous
  • anonymous
A genral rule is when you square both sides and the negative it attached to a number, You put the negative in brackets and them square it.
anonymous
  • anonymous
Because when you square you are basically going -4 * -4 which his 16 ( negative * negative is +) .
anonymous
  • anonymous
Okay. Well I got the final answer to be 3. But it says that that is wrong. Why is that?
anonymous
  • anonymous
So when you square both sides, what did you get?
anonymous
  • anonymous
It's strange, that's absolutely correct.
anonymous
  • anonymous
That's what I thought. It's online hw. And it tells you when it's right or wrong.
anonymous
  • anonymous
nevermind it was does not exist
anonymous
  • anonymous
probably because it was a -4
anonymous
  • anonymous
No, that's not why.
anonymous
  • anonymous
It depends on the sign of the square root.
anonymous
  • anonymous
If it's a POSITIVE square root then yes, no solutions exist.
anonymous
  • anonymous
But if it's -√(6a-2) then it's 3.
anonymous
  • anonymous
Because when you take the square root of a function it's always in the form of ±√ f(x) . We need to know the proper sign.
anonymous
  • anonymous
That question was badly worded.
anonymous
  • anonymous
You can say that again!
anonymous
  • anonymous
Anything else?
anonymous
  • anonymous
Only if you are up for it!
anonymous
  • anonymous
√(x+6)=√(x)-6
anonymous
  • anonymous
Square both sides :P .
anonymous
  • anonymous
I found the answer
anonymous
  • anonymous
It's a procedure essentially :P .
anonymous
  • anonymous
What did you get?
anonymous
  • anonymous
does not exist
anonymous
  • anonymous
Good job!
anonymous
  • anonymous
√(y+1)=√(y)+1
anonymous
  • anonymous
what about this one?
anonymous
  • anonymous
Square both sides :) .
anonymous
  • anonymous
okay
anonymous
  • anonymous
y+1=y+1?
anonymous
  • anonymous
No....
anonymous
  • anonymous
We have: |dw:1355464812127:dw|
anonymous
  • anonymous
You square the WHOLE thing :) .
anonymous
  • anonymous
oh okay
anonymous
  • anonymous
so what do i do now?
anonymous
  • anonymous
After squaring both sides?
anonymous
  • anonymous
yes
anonymous
  • anonymous
Get all the y's on one side.
anonymous
  • anonymous
I think I am having trouble squaring them.
anonymous
  • anonymous
|dw:1355465159249:dw|
anonymous
  • anonymous
oh so I foil
anonymous
  • anonymous
You should get the same answer no matter what you use.
anonymous
  • anonymous
oh okay
anonymous
  • anonymous
What did you do?
anonymous
  • anonymous
I am moving the y's
anonymous
  • anonymous
I think I am doing this wrong

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