G
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Can u help me rationalize...1/ 1+radical 3- radical 5?
AND... 4/1 - radical 5?
AND... 4/1 - radical 5?
- Joined
- Feb 4, 2004
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- 16,582
I will guess that you mean the following:
. . . . .4/[1 - sqrt(5)]
If so, multiply top and bottom by the conjugate, 1 + sqrt(5). Simplify.
For the other one, I think you mean:
. . . . .1/[1 + sqrt(3) - sqrt(5)]
If so, try multiplying top and bottom by 1 + sqrt(3) + sqrt(5). Simplify. Then multiply again, this time by 2sqrt(3) + 1. There may be a simpler way, but this is an obvious way.
Eliz.
. . . . .4/[1 - sqrt(5)]
If so, multiply top and bottom by the conjugate, 1 + sqrt(5). Simplify.
For the other one, I think you mean:
. . . . .1/[1 + sqrt(3) - sqrt(5)]
If so, try multiplying top and bottom by 1 + sqrt(3) + sqrt(5). Simplify. Then multiply again, this time by 2sqrt(3) + 1. There may be a simpler way, but this is an obvious way.
Eliz.