Question

Raltionize the denominator 2/√2−1
Wrong ans will be reported​

Answer 1

Answer:

The denominator must contain no radicals, or else it's "wrong". (Why "wrong", in ... To get the "right" answer, I must "rationalize" the denominator. That is, 2/√2 - 1 = 84

Answer 2

Step-by-step explanation:

rationallising factor =root 2 +1

$\frac{2}{ \sqrt{2 - 1} } \times \frac{ \sqrt{2 } + 1}{ \sqrt{2 } + 1}$

$\frac{2 \sqrt{2} + 1}{ \sqrt{2 {}^{2} } - {1}^{2} }$

$\frac{2 \sqrt{2} + 2}{1}$

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