Advertisements
Advertisements
प्रश्न
Using identities, evaluate 9982
Advertisements
उत्तर
9982 = (1000 − 2)2
= (1000)2 − 2(1000)(2) + (2)2 [(a − b)2 = a2 − 2ab + b2 ]
= 1000000 − 4000 + 4 = 996004
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)
Simplify (4m + 5n)2 + (5m + 4n)2
Simplify (m2 − n2m)2 + 2m3n2
Use the formula to multiply the following.
(x + y) (x − y)
Use a formula to multiply of (x - 5)(x + 5).
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.
16x2 + 40x + 25
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
9x2 + 30x + 25
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
4x4 + 12x3 + 9x2
