Mastering Limit Problems: Homework Statement & Solution | 65 Characters

[screamtrumpet]

Homework Statement

lim
x>b (b-x)/sqr rootx-sqr root b

The Attempt at a Solution

I multilplied the top and bottom by b+x and found b-x^s on the top and x-b on the bottom

 

[jhae2.718]

Try multiplying through by the conjugate of \sqrt{x}-\sqrt{b}...

 

[screamtrumpet]

so would that be square root x plus square root b?

 

[╔(σ_σ)╝]

Yes it should be.

 

[screamtrumpet]

after factoring and simplifying i got my answer to be 2b

 

[Dick]

after factoring and simplifying i got my answer to be 2b

Not right. If you would show how you got there someone might be able to tell you why it's wrong.