Advertisements
Advertisements
प्रश्न
(a – b) ______ = a2 – 2ab + b2
उत्तर
(a – b) (a – b) = a2 – 2ab + b2
Explanation:
We know that,
(a – b)(a – b) = (a – b)2
= a2 – 2ab + b2 ...[∵ (a – b)2 = a2 – 2ab + b2]
APPEARS IN
संबंधित प्रश्न
Expand `("a"-1/"a")^2`
The factors of x2 – 4x + 4 are __________
Evaluate the following, using suitable identity
472
Using suitable identities, evaluate the following.
(9.9)2
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
4a2 – 4ab + b2
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
4y2 – 12y + 9
Factorise the following.
y2 – 2y – 15
The curved surface area of a cylinder is 2π(y2 – 7y + 12) and its radius is (y – 3). Find the height of the cylinder (C.S.A. of cylinder = 2πrh).
If x – y = 13 and xy = 28, then find x2 + y2.
Verify the following:
(a – b)(a – b)(a – b) = a3 – 3a2b + 3ab2 – b3
