Advertisements
Advertisements
प्रश्न
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 6x + 9
बेरीज
Advertisements
उत्तर
We have,
x2 + 6x + 9
= x2 + 2 × 3 × x + 32
= (x + 3)2 ...[∵ a2 + 2ab + b2 = (a + b)2]
= (x + 3)(x + 3)
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 7: Algebraic Expression, Identities and Factorisation - Exercise [पृष्ठ २३४]
APPEARS IN
संबंधित प्रश्न
Use a suitable identity to get the following products.
(1.1m − 0.4) (1.1 m + 0.4)
Find the following squares by suing the identities.
(6x2 − 5y)2
Using identities, evaluate 992
Using (x + a) (x + b) = x2 + (a + b) x + ab, find 5.1 × 5.2
Expand: (2a – 3b)2
Evaluate the following, using suitable identity
512
If a + b = 10 and ab = 18, find the value of a2 + b2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
`9x^2 + 2xy + y^2/9`
The area of a square is given by 4x2 + 12xy + 9y2. Find the side of the square.
Factorise p4 + q4 + p2q2.
