SOLUTION: Rationalize the denominator. Assume that all expressions under radicals represent positive numbers. {{{(sqrt(r)-sqrt(s))/(sqrt(r)+sqrt(s))}}} (Simplify your answer. Type an exa

Question 396143: Rationalize the denominator. Assume that all expressions under radicals represent positive numbers.

(Simplify your answer. Type an exact answer, using radicals as needed.)
Answer by CharlesG2(834) (Show Source): You can put this solution on YOUR website!
Rationalize the denominator. Assume that all expressions under radicals represent positive numbers.

(Simplify your answer. Type an exact answer, using radicals as needed.)

need square roots in denominator to go away,
using conjugate of sqrt(r) + sqrt(s) which is sqrt(r) - sqrt(s)
to multiply numerator and denominator by
use FOIL (First Outer Inner Last) when multiplying

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