Advertisements
Advertisements
Question
Factorise completely: 5b2 + 45b + 90
Sum
Advertisements
Solution
5b2 + 45b + 90 = 5[b2 + 9b + 18]
= 5[b2 + 6b + 3b + 18]
= 5[b(b + 6) + 3(b + 6)]
= 5[(b + 6) (b + 3)]
= 5 (b + 6)(b + 3)
shaalaa.com
Factorising Completely
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Factorise completely: 8x2y - 18y3
Factorise completely: ax2 - ay2
Factorise completely: 25x3 - x
Factorise completely: 625 - x4
Factorise completely: 3x2y + 11xy + 6y
Factorise completely: a2 + 2ab + b2 - c2
Factorise completely: x2 + 6xy + 9y2 + x + 3y
Factorise completely: 4a2 -12ab + 9b2 + 4a- 6b
Factorise completely: 2a2b2 - 98b4
Factorise completely:
a2 − 16b2 − 2a − 8b
