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What is rationalisation?

Updated: 12/9/2022
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16y ago

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Rationalization is the process of converting the irrational denominator of a given fraction into rational by multiplying and dividing by suitable terms.

For example, consider,

2/3√2

Here the denominator is an irrational number

to rationalize this fraction follow the steps:

  • Find a number which on multiplying with denominator returns a rational number( here √2 * √2 will give 2 which is a rational number ).
  • Multiply numerator and denominator with the number you just found {(2/3√2) becomes (2/3√2)(√2/√2) = 2√2/6)

Now the rationalized result is 2√2/6

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allysia

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2y ago
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Michaela Williamson

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2y ago
nice thx!
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13y ago

In maths, Rationalise is when you multiply the denominator by the denominator it self as a fraction

Seconds meaning of rationalise is when you know in your conscience when you are wrong but you make up excuses to defend your self (although the evidence proves you are wrong).

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