How do you rationalize the denominator 5/(sqrt(28x))?

1 Answer
Alan P.
Jun 1, 2015

You could rationalize the denominator of 5/sqrt(28x)
by multiplying by sqrt(28x)/sqrt(28x)

5/sqrt(28x) * sqrt(28x)/sqrt(28x)

color(white)("XXXXX")= (5sqrt(28x))/(28x)

Note this could be simplified a little by noting that 28 = 2^2*7, so
color(white)("XXXXX")= (5sqrt(7x))/(14x)

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