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miskamm [114]
3 years ago
11

Rationalise the denominator 10/root 2

Mathematics
2 answers:
natali 33 [55]3 years ago
7 0
So,

A denominator is rationalized when there are no irrational or imaginary numbers in it.  Since the square root of 2 is irrational, we just need to multiply the fraction by the square root of 2 over the square root of 2.

\frac{10}{ \sqrt{2} }

Multiply the fraction by the square root of 2 over the square root of 2.
\frac{10\sqrt{2}}{ \sqrt{2}*\sqrt{2} }

Simplify.
\frac{10\sqrt{2}}{2}

5\sqrt{2}

The denominator is now 1, which is a rational number.
Vikentia [17]3 years ago
3 0
Multiply the numerator and denominator by √2
10√2/2
Simplify
5√2
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