Advertisements
Advertisements
Question
Factorise the following:
2a2 + 9a + 10
Sum
Advertisements
Solution
Product = 2 × 10 = 20, sum = 9
Split the middle term as 5a and 4a
2a2 + 9a + 10 = 2a2 + 5a + 4a + 10
= a(2a + 5) + 2(2a + 5)
= (2a+ 5)(a+ 2)
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
f(x) = 4x4 − 3x3 − 2x2 + x − 7, g(x) = x − 1
If the polynomials 2x3 + ax2 + 3x − 5 and x3 + x2 − 4x +a leave the same remainder when divided by x −2, find the value of a.
Find the remainder when x3 + 3x2 + 3x + 1 is divided by \[x - \frac{1}{2}\].
For what value of a is (x − 5) a factor of x3 − 3x2 + ax − 10?
x3 + 2x2 − x − 2
2y3 − 5y2 − 19y + 42
x3 − 3x2 − 9x − 5
2y3 + y2 − 2y − 1
Factorise the following:
(a + b)2 + 9(a + b) + 18
Factorise:
3x3 – x2 – 3x + 1
