Rationalise the denominator of : 5 3 - 5
We have,
5 3 - 5 = 5 3 + 5 × 3 + 5 3 + 5 = 3 + 5 3 - 5 = - 5 2 3 + 5
Find the value to three places of decimals, of each of the following:
It is given that 2 = 1.414 , 3 = 1.732, 10 = 3.162 and 5 = 2.236 (approx.).
(i) 2 + 1 5 (ii) 2 - 3 3 (iii) 10 - 5 2