Advertisements
Advertisements
प्रश्न
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
9x2 + 30x + 25
Advertisements
उत्तर
We have,
9x2 + 30x + 25
= (3x)2 + 2 × 3x × 5 + 52
= (3x + 5)2
= (3x + 5)(3x + 5)
APPEARS IN
संबंधित प्रश्न
Use a suitable identity to get the following products.
`(3a - 1/2)(3a - 1/2)`
Simplify (4m + 5n)2 + (5m + 4n)2
Using (x + a) (x + b) = x2 + (a + b) x + ab, find 5.1 × 5.2
Using (x + a) (x + b) = x2 + (a + b) x + ab, find 103 × 98
Using (x + a) (x + b) = x2 + (a + b) x + ab, find 9.7 × 9.8
Using identity, find the value of (100.1)2
(a + b)2 – 2ab = ______ + ______.
The sum of areas of two squares with sides 4a and 4b is ______.
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
4x4 + 12x3 + 9x2
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.
