Conjugates with Square RootsDate: 1/29/96 at 9:59:14 From: Anonymous Subject: square root and conjugate I don't understand what conjugates are in relation to square roots, and what good they do. Date: 3/27/96 at 23:54:26 From: Doctor Jodi Subject: Re: square root and conjugate Hi there! Okay, let me write square root of x as x^1/2 Now, suppose I have a fraction: 1 ------------ 2^(1/2) -3 Suppose I want to get the square root out of the denominator.... To do that, we can use the conjugate (square root of 2 PLUS 3): 1 2^(1/2) + 3 ----------- * --------------- 2^(1/2) -3 2^(1/2) + 3 Do you see what we'll get? Write back if you have more questions or want to know more. I hope this helps. -Doctor Jodi, The Math Forum |
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