180k views
5 votes
A) Rationalise the denominator of
20/root 10
Give your answer in its simplest form.

User Arg Geo
by
8.6k points

2 Answers

4 votes

Answer:


\bf 2 √(10) \approx6.32456

Explanation:


\sf (20)/( √(10) )


\sf = (20)/( √(10) ) * ( √(10) )/( √(10) )


\sf = (20 √(10) )/( √(10) √(10) )


\sf = (20 √(10) )/(10)


\sf = 2 √(10) \approx6.32456

Conclusion:

Simple form of
\sf (20)/( √(10) ) is
\bf 2 √(10) \approx6.32456.

User Bliksem
by
8.0k points
6 votes

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎
\bigstar \boxed{\large\bf{\leadsto 2√(10)}}

__________________________________________


\large\bf{Here,}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎
\large\bf{⟹\frac{20}{\sqrt {10}}}

Multiply the numerator and denominator by
\bf{√(10)}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎
\large\bf{⟼(20)/(√(10))*(√(10))/(√(10))}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎
\large\bf{⟼(20√(10))/((√(10))^2)}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎
\large\bf{⟼(20√(10))/(10)}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎
\large\bf{⟼2√(10)}

User Aaronrussell
by
7.9k points

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