Advertisements
Advertisements
प्रश्न
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 14x + 49
Advertisements
उत्तर
We have,
x2 + 14x + 49
= x2 + 2 × 7 × x + 72
= (x + 7)2
= (x + 7)(x + 7)
APPEARS IN
संबंधित प्रश्न
Use a suitable identity to get the following products.
`(x/2 + (3y)/4)(x/2 + (3y)/4)`
Use a suitable identity to get the following products.
(7a − 9b) (7a − 9b)
Find the following squares by suing the identities.
(b − 7)2
Find the following squares by suing the identities.
`(2/3 m + 3/4 n)^2`
Find the following squares by suing the identities.
(2xy + 5y)2
Simplify (ab + bc)2 − 2ab2c
Use a formula to multiply of (2t – 5)(2t + 5)
Expand: (2x + 3y)2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
4x2 + 4x + 1
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x2 + 2abx + b2
