Mathematics
Factorise the following:
4a2 - b2 + 2a + b
Factorisation
34 Likes
Answer
4a2 - b2 + 2a + b = (2a)2 - b2 + 2a + b.
Using identity,
a2 - b2 = (a - b)(a + b).
(2a)2 - b2 + 2a + b = (2a - b)(2a + b) + (2a + b)
= (2a + b)(2a - b + 1).
Hence, 4a2 - b2 + 2a + b = (2a + b)(2a - b + 1).
Answered By
21 Likes