XIII + 47 = ____
XIII = 10 + 1 + 1 + 1 = 13 ∴XIII + 47 = 13 + 47 = 60
Simplify
(s2t+tq2)2−(2stq)2
Question 4 (xiii) Which of the following are APs? If they form an A.P. find the common difference d and write three more terms. (xiii) √3,√6,√9,√12, …
Question 86 (xiii)
Using suitable identities, evaluate the following:
(9.9)2