Factors-6
From Homeworkwiki
Factorize :
(i) x 2 + 7 x + 6 + p x + 6 p
(ii) 3 (2 a - b) 2 - 5 (2 a - b) - 8
Solution :
(i) x 2 + 7 x + 6 + p x + 6 p
= x 2 + 6 x + x + 6 + p x + 6 p [Factorizing x 2 + 7 x + 6]
= x (x + 6) + 1 (x + 6) + p (x + 6)
= (x + 6) (x + 1 + p)
(ii) 3 (2 a - b) 2 - 5 (2 a - b) - 8
= 3 x 2 - 5 x - 8 [Taking : 2 a - b = x]
= 3 x 2 - 8 x + 3 x - 8
= x (3 x - 8) + 1 (3 x - 8)
= (3 x - 8) (x + 1)
= [3 (2 a - b) - 8] (2 a - b + 1) [Substituting the value of x]
= (6 a - 3 b - 8) (2 a - b + 1)
