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
Find the following squares by suing the identities
(xy + 3z)2
Find the following squares by suing the identities.
`(2/3 m + 3/4 n)^2`
Find the following squares by suing the identities
(0.4p − 0.5q)2
Find the following squares by suing the identities.
(2xy + 5y)2
Using identities, evaluate 712
Using a2 − b2 = (a + b) (a − b), find 512 − 492
Using a2 − b2 = (a + b) (a − b), find 1532 − 1472
Use a formula to multiply of (2t – 5)(2t + 5)
Factorise the following.
x2 + 15x + 26
The area of a rectangle is x2 + 7x + 12. If its breadth is (x + 3), then find its length.
