Advertisements
Advertisements
Question
Expand the following:
(3x + 4) (2x - 1)
Advertisements
Solution
(3x + 4) (2x - 1)
= 6x2 - 3x + 8x - 4
= 6x2 + 5x - 4
(Using identity : (x+ a) (x -b)
= x2 + (a - b) x - ab).
APPEARS IN
RELATED QUESTIONS
Write the following cube in expanded form:
`[3/2x+1]^3`
Factorise the following:
27 – 125a3 – 135a + 225a2
Factorise the following:
64a3 – 27b3 – 144a2b + 108ab2
Give possible expression for the length and breadth of the following rectangle, in which their area are given:
| Area : 25a2 – 35a + 12 |
Find the cube of the following binomials expression :
\[\frac{3}{x} - \frac{2}{x^2}\]
Evaluate of the following:
(103)3
If \[x + \frac{1}{x} = 3\] then find the value of \[x^6 + \frac{1}{x^6}\].
Mark the correct alternative in each of the following:
If \[x + \frac{1}{x} = 5\] then \[x^2 + \frac{1}{x^2} = \]
Expand the following:
`(2"a" + 1/(2"a"))^2`
Find the squares of the following:
3p - 4q2
