Fixing it by making the denominator rational is called rationalizing the denominator note. A fraction whose denominator is a surd can be simplified by making the denominator rational.

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### A fraction with the square root of a single term in the denominator is the easiest to rationalize.

**How to rationalize the denominator**. In general the fraction takes the form a x you rationalize it by multiplying the numerator and denominator by x. Rationalizing the denominator is the process of moving any root or irrational number cube roots or square roots out of the bottom of the fraction denominator and to top of the fraction numerator. This part of the fraction can not have any irrational numbers.

Then simplify the fraction if necessary. Before we learn how to rationalize a denominator we need to know about conjugates. The denominator is the bottom part of a fraction.

And removing them may help you solve an equation so you should learn how. How to rationalize the denominator using conjugates. This process is called rationalising the denominator.

But it is not simplest form and so can cost you marks. A conjugate is a similar surd but with a different sign. If you re working with a fraction that has a binomial denominator or two terms in the denominator multiply the numerator and denominator by the conjugate of the denominator.

The most common used irrational numbers that are used are radical numbers for. To rationalize a denominator start by multiplying the numerator and denominator by the radical in the denominator. There is nothing wrong with an irrational denominator it still works.

The conjugate of sqrt a sqrt b is sqrt a sqrt b in the process of rationalizing a denominator the conjugate is the rationalizing. If the denominator has just one term that is a. To be in simplest form the denominator should not be irrational.

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