Simplify the following expression completely by rationalising each denominator
MATHEMATICS · Multi-part · CBSE · Mathematics · Number Systems · Number Systems
Problem
Simplify the following expression completely by rationalising each denominator. Write every step clearly.
(i) Rationalise the denominator of 7+225−2 and write the fraction in its simplest form.
(ii) State the rational value that appears in the denominator after rationalisation.
(iii) Using your answer from part (i), calculate an approximate decimal value of the simplified expression correct to two decimal places.