square root of 3-square root of 5 divided by square root of

[alcalet]

square root of 3-square root of 5 divided by square root of 2+square root of 5

 

[stapel]

square root of 3-square root of 5 divided by square root of 2+square root of 5

Do you mean either of the following?

. . . . .sqrt[3] - ( sqrt[5] / sqrt[2] ) + sqrt[5]

. . . . .( sqrt[3] - sqrt[5] ) / ( sqrt[2] + sqrt[5] )

What were the instructions? How far have you gotten? Where are you stuck?

Please be complete. Thank you!

Eliz.

 

[alcalet]

I need to rationalize the denominator I do no know what to do the top one is the one i need

 

[stapel]

I need to rationalize the denominator I do no know what to do the top one is the one i need

I think the above means that the first of my two earier guesses is the expression you have been given, that you are supposed to simplify that expression and rationlize any radical denominators, that you missed the classroom lectures that covered how to do this, and that the book isn't making sense to you, so you need lesson links. (In future, kindly keep in mind that using standard English, such as punctuation, etc, can be very helpful in conveying your meaning to other people.)

So you have the following:

. . . . .\(\displaystyle \sqrt{3}\, -\, \frac{\sqrt{5}}{\sqrt{2}}\, +\, \sqrt{5}\)

Obviously, the first and third terms cannot be combined. But you can rationalize the denominator of the second (fractional) term. To learn how, try studying from some of the many great lessons available onine:

. . . . .Google results for "rationalize denominator radical"

Once you have studied at least two lessons from the listing provided by the above link, please attempt the exercise. If you get stuck, please reply with a clear listing of your work and reasoning so far.

Thank you!

Eliz.