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Kris5
Group Title
help me please :)
1. Which expression is equivalent to radical 5+ radical 3 / radical 5  radical 3?
2. The fraction 11/a divided by 11/a^2 is equiv. to...
3. Solve for x: 3/x2+8/x^24=1
 one year ago
 one year ago
Kris5 Group Title
help me please :) 1. Which expression is equivalent to radical 5+ radical 3 / radical 5  radical 3? 2. The fraction 11/a divided by 11/a^2 is equiv. to... 3. Solve for x: 3/x2+8/x^24=1
 one year ago
 one year ago

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tkhunny Group TitleBest ResponseYou've already chosen the best response.1
Please use parentheses to write what you intend. In your #1, you have written \(\sqrt{5} + \dfrac{\sqrt{3}}{\sqrt{5}}  \sqrt{3}\). I'm guessing this is not what you intended. In what I suspect you intended, multiply numerator and denominator separetely by \(\sqrt{5}+\sqrt{3}\) and see what magic happens, especially in the denominator.
 one year ago

Kris5 Group TitleBest ResponseYou've already chosen the best response.0
dw:1356738160323:dw
 one year ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
Indeed. Did you do what I said? That will solve it.
 one year ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
Good call. Show us what you get.
 one year ago

Kris5 Group TitleBest ResponseYou've already chosen the best response.0
dw:1356738348623:dw
 one year ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
SO CLOSE!!!! That's \(8+2\sqrt{15}\) and then you have a common factor in numerator and denominator that can help to simplify a little more. Excellent work. You're getting it.
 one year ago

Kris5 Group TitleBest ResponseYou've already chosen the best response.0
I made an error
 one year ago

Kris5 Group TitleBest ResponseYou've already chosen the best response.0
dw:1356738746427:dw
 one year ago

Kris5 Group TitleBest ResponseYou've already chosen the best response.0
4+ radical 15
 one year ago

Kris5 Group TitleBest ResponseYou've already chosen the best response.0
\[4+\sqrt{15}\]
 one year ago

Kris5 Group TitleBest ResponseYou've already chosen the best response.0
thank you :)
 one year ago
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