How do you rationalise the denominator

You must multiply the numerator and denominator by a specific root that makes the denominator become a perfect root and rational.

Here is an example. Rationalize the following denominator:

By multiplying sqrt(2) by sqrt(2), you get 2 which is rational. Therefore, multiplying the denominator by sqrt(2) will accomplish the goal of rationalizing the denominator. Of course, since we a dealing with a fraction, we must multiply both the numerator and denominator by the same number to generate an equivalent fraction, so we multiply both the numerator and denominator by sqrt(2). Then we simplify and reduce the fraction.

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step-by-step explanation:

so then what are you asking?

step-by-step explanation: