Advertisements
Advertisements
प्रश्न
Expand the following:
(2x - 5) (2x + 5) (2x- 3)
योग
Advertisements
उत्तर
(2x - 5) (2x + 5) (2x- 3)
= (4x2 - 25) (2x - 3)
= 8x3 - 12x2 - 50x + 75
(Using identity : (x - a) (x + b)
= x2 - (a - b) x - ab).
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Factorise the following using appropriate identity:
4y2 – 4y + 1
Evaluate following using identities:
991 ☓ 1009
If 9x2 + 25y2 = 181 and xy = −6, find the value of 3x + 5y
If 3x - 7y = 10 and xy = -1, find the value of `9x^2 + 49y^2`
Find the cube of the following binomials expression :
\[\frac{3}{x} - \frac{2}{x^2}\]
Expand the following:
(a + 3b)2
If x + y = 1 and xy = -12; find:
x - y
Evaluate the following :
1.81 x 1.81 - 1.81 x 2.19 + 2.19 x 2.19
If `x/y + y/x = -1 (x, y ≠ 0)`, the value of x3 – y3 is ______.
Expand the following:
`(4 - 1/(3x))^3`
