Help with Solving 1 + (root3+1)^2/root3+1

  • Thread starter Skeletor
  • Start date
In summary, the conversation is about someone seeking help to understand how to solve a mathematical expression involving a square root and fractions. The correct solution is provided by dividing the expression by the conjugate and simplifying to get the final answer.
  • #1
Skeletor
1
0
HELP! PLease cna someone explain how to do this quck please?!

1
----- + (root3+1)squared
root3+1
 
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  • #2
What are you trying to find?
 
  • #3
[tex]\frac{1}{\sqrt{3}+1}+(\sqrt{3}+1)^2[/tex]
is I believe what he was trying to get the answer to.

EDIT: Bah, read below...
 
Last edited:
  • #4
I got [tex]\frac{5}{2}\sqrt{3}+\frac{7}{2}[/tex]
 
  • #5
What? Wait... d'oh! I forgot to divide the other half of the expression by [tex]\sqrt{3}-1[/tex]... Seems like the whole thing doesn't work now...

Then you have to go about it like so:

[tex]\frac{1}{\sqrt{3}+1}+(\sqrt{3}+1)^2[/tex]
[tex]=\frac{1+(\sqrt{3}+1)^3}{\sqrt{3}+1}[/tex]
[tex]=\frac{(1+(\sqrt{3}+1)^3)(\sqrt{3}-1)}{(\sqrt{3}+1)(\sqrt{3}-1)}[/tex]
[tex]=\frac{\sqrt{3}-1+2(\sqrt{3}+1)^2}{2}[/tex]
[tex]=\frac{\sqrt{3}-1+4\sqrt{3}+8}{2}[/tex]
[tex]=\frac{5\sqrt{3}+7}{2}[/tex]
[tex]=\frac{5}{2}\sqrt{3}+\frac{7}{2}[/tex]

Which is far more correct...
 

What is the equation being solved?

The equation being solved is 1 + (root3+1)^2/root3+1.

What is the value of root3+1?

The value of root3+1 is approximately 2.73205.

How do I simplify the equation?

To simplify the equation, you can first expand the numerator using the FOIL method (First, Outer, Inner, Last). Then, combine like terms and simplify the fraction.

What is the final answer?

The final answer is 4 + 2*root3.

How can I check if my answer is correct?

You can check your answer by plugging it back into the original equation and simplifying. If you get the same value on both sides of the equation, then your answer is correct.

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