Advertisements
Advertisements
प्रश्न
Use the formula to find the value.
502 × 498
योग
Advertisements
उत्तर
It is known that, (a + b) (a − b) = a2 − b2.
502 × 498
= (500 + 2) × (500 − 2)
= (500)2 − (2)2
= 250000 − 4
= 2,49,996
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
संबंधित प्रश्न
Use a suitable identity to get the following products.
`(3a - 1/2)(3a - 1/2)`
Simplify (2x +5)2 − (2x − 5)2
Simplify (7m − 8n)2 + (7m + 8n)2
Using (x + a) (x + b) = x2 + (a + b) x + ab, find 103 × 98
Expand `("x"+1/2)^2`
Use a formula to multiply of (2a – 13)(2a + 13)
Using identity, find the value of (100.1)2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
4x4 + 12x3 + 9x2
If p + q = 12 and pq = 22, then find p2 + q2.
Factorise `x^2 + 1/x^2 + 2 - 3x - 3/x`.
