Question

-5/sqrt5 - sqrt 3

Answer 1

I have the answer but I forgot to show my work and now I forgot how I did the work

Answer 2

which is the problem:

\(\large \frac{-5}{\sqrt5}-\sqrt3 \) or \(\large \frac{-5}{\sqrt5-\sqrt3} \) ????

Answer 3

the second one

Answer 4

if the question is to simplify the expression, multiply both numerator and denominator by the conjugate of the denominator..

Answer 5

\[\large \frac{-5}{\sqrt{5}-\sqrt{3}}\] multiply by the conjugate \[\large \frac{-5}{\sqrt{5}-\sqrt{3}}*\frac{\sqrt{5}+\sqrt{3}}{\sqrt{5}+\sqrt{3}}\]simplify \[\frac{ -5(\sqrt{5}+\sqrt{3}) }{ (\sqrt{5}-\sqrt{3})(\sqrt{5}+\sqrt{3}) }\]\[\large \frac{ -5(\sqrt{5}+\sqrt{3}) }{ 2 }\] Now just multiply in the -5 into the numerator and simplify :) you'll have your answer :)

Answer 6

what would the conjugate of the denominator be?

Answer 7

http://www.mathsisfun.com/algebra/images/conjugate.gif

Answer 8

yeah

Answer 9

so would my final answer be -5/2 sqrt 3 -5/2 sqrt 5

Answer 10

over 2 as Jhannybean showed above

Answer 11

thank you so much!

Answer 12

the denominator factors out as shown \[\large (\sqrt{5}-\sqrt{3})(\sqrt{5}+\sqrt{3})\]\[\large 5-\sqrt{15}+\sqrt{15}-3=2\]

Answer 13

ty