Advertisements
Advertisements
Question
Factorise : 3a2b - 12a2 - 9b + 36
Sum
Advertisements
Solution
3a2b - 12a2 - 9b + 36
= 3a2 (b - 4) - 9 (b - 4)
= (b - 4) (3a2 - 9) = (b - 4) 3 (a2 - 3)
= 3 (b - 4) (a2 -3)
shaalaa.com
Factorisation by Grouping
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Factorise by the grouping method :
`a^2 + 1/a^2 - 2 - 3a + 3/a`
Factorise : (a2 − b2) c + (b2 − c2)a
Factorise : a3 - a2 - ab + a + b - 1
factorise: a2 - 5a+ 6
factorise: x2 - x - 72
factorise: x2 - 10xy + 24y2
factorise: 2a2 + 7a + 6
factorise: 2a2 - 17ab + 26b2
factorise: a2 - 23a -108
Factorise the following by grouping the terms:
8(2a + b)2 - 8a -4b
