Using identity (x−a)(x+a)=x2−a2, find 62−52.
12
13
10
11
In the Identity (x−a)(x+a)=x2−a2 We put x=6 and a=5 (6−5)(6+5)=(1)(11)=11
Using identity (x−a)(x+a)=x2−a2,362−352=
Using the identity, simplify the following:
(i) (a + 6)2, (ii) (3x + 2y)2; (iii) (2p + 3q)2; (iv) (x2 + 5)2.