Advertisements
Advertisements
प्रश्न
Use a suitable identity to get the following products.
`(3a - 1/2)(3a - 1/2)`
उत्तर
The product will be as follows
`(3a - 1/2)(3a - 1/2) = (3a - 1/2)^2`
`= (3a)^2 - 2(3a) (1/2) + (1/2)^2 [(a-b)^2 = a^2 - 2ab + b^2]`
= `9a^2 - 3a + 1/4`
APPEARS IN
संबंधित प्रश्न
Use a suitable identity to get the following products
(2a − 7) (2a − 7)
Find the following squares by suing the identities.
`(2/3 m + 3/4 n)^2`
Using a2 − b2 = (a + b) (a − b), find (1.02)2 − (0.98)2
Use an expansion formula to find the value.
(997)2
Expand: (2a – 3b)2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 14x + 49
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 2x + 1
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
9x2 + 24x + 16
Verify the following:
(7p – 13q)2 + 364pq = (7p + 13q)2
Find the length of the side of the given square if area of the square is 625 square units and then find the value of x.
