Advertisements
Advertisements
प्रश्न
Use an expansion formula to find the value.
(997)2
योग
Advertisements
उत्तर
It is known that, (a + b)2 = a2 + 2ab + b2 and (a − b)2 = a2 − 2ab + b2
(997)2
= (1000 − 3)2
= (1000)2 − 2 × 1000 × 3 + (3)2
= 1000000 − 6000 + 9
= 994009
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
संबंधित प्रश्न
Use a suitable identity to get the following products.
(x + 3) (x + 3)
Simplify (m2 − n2m)2 + 2m3n2
Using identities, evaluate 9982
Expand: `("y" - 3/"y")^2`
Simplify: (a + b)2 + (a – b)2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 12x + 36
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
4x2 + 12x + 9
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
9x2 + 30x + 25
Factorise the following.
y2 + 7y + 12
If p + q = 12 and pq = 22, then find p2 + q2.
