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: 16 (a + b)2 - 4a - 4b
Factorise : 6a2 - 3a2b - bc2 + 2c2
Factorise: 7b2 - 8b + 1
factorise: 8 + 6(a + b) - 5(a + b)2
factorise: 5 - 4x(1 + 3x)
factorise: x2y2 - 3xy - 40
factorise: ax2 + b2y - ab2 - x2y
Factorise the following by grouping the terms:
x(x - 4)- x + 4
Factorise the following by grouping the terms:
p2x2 + (px2 + 1)x + p
Factorise the following by grouping the terms:
`"p"^2 + (1)/"p"^2 - 2 - 5"p" + (5)/"p"`
