Advertisements
Advertisements
Question
Factorise.
2x2 + x − 45
Sum
Advertisements
Solution
2x2 + x − 45
= 2x2 + 10x − 9x − 45
= 2x(x + 5) − 9(x + 5)
= (2x − 9) (x + 5)
shaalaa.com
Is there an error in this question or solution?
RELATED QUESTIONS
Factorise.
x2 − 10x + 9
Factorise:
a(3a - 2) - 1
Factorise : a2b2 + 8ab - 9
Factorise: 5 - (3a2 - 2a) (6 - 3a2 + 2a)
Give possible expressions for the length and the breadth of the rectangle whose area is 12x2 - 35x + 25
Find trinomial (quadratic expression), given below, find whether it is factorisable or not. Factorise, if possible.
2x2 - 7x - 15
Factorise the following:
y2 + 3y + 2 + by + 2b
Factorise the following:
`2sqrt(5)x^2 - 7x - 3sqrt(5)`
Factorise the following:
(3a - 2b)2 +3(3a - 2b) - 10
Factorise the following:
(t2 - t)(4t2 - 4t - 5) - 6
