Advertisements
Advertisements
Question
factorise: 12(a + b)2 - (a+ b) - 35
Sum
Advertisements
Solution
12(a + b)2 - (a+ b) - 35
= 12 (a + b)2 - 21 (a + b) + 20 (a + b) - 7
= 3(a + b) [4 (a + b) - 7] + 5[4 (a + b) - 7]
= (4a + 4b - 7)(3a + 3b + 5)
shaalaa.com
Factorisation by Grouping
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Factorise by the grouping method : a3 + a - 3a2 - 3
Factorise using the grouping method :
a2 + 4b2 - 3a + 6b - 4ab
Factorise : a(b − c) − d(c − b)
factorise: x2 + 6x + 8
factorise: 2a2 - 17ab + 26b2
factorise: 2x2 + xy - 6y2
factorise: (x - 2y)2 - 12(x - 2y) + 32
factorise: a2 - 23a + 42
factorise: x2y2 - 3xy - 40
Factorise the following by grouping the terms:
`(1)/(25x^2) + 16x^2 + (8)/(5) - 12x - (3)/(5x)`
