Advertisements
Advertisements
प्रश्न
Evaluate the following, using suitable identity
9982
उत्तर
9982 = (1000 – 2)2
Taking a = 1000 and b = 2
(a – b)2 = a2 – 2ab + b2 becomes
= 10002 – 2(1000)(2) + 22
= 1000000 – 4000 + 4
9982 = 9,96,004
APPEARS IN
संबंधित प्रश्न
A square lawn has a 2 m wide path surrounding it. If the area of the path is 136 m2, find the area of lawn
(a – b) ______ = a2 – 2ab + b2
(a – b)2 + ______ = a2 – b2
Using suitable identities, evaluate the following.
(9.9)2
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
x2 – 10x + 25
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
p2 – 2p + 1
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
`9y^2 - 4xy + (4x^2)/9`
Factorise the following.
x2 – 10x + 21
Factorise the following.
x2 + 4x – 77
If x – y = 13 and xy = 28, then find x2 + y2.
