Advertisements
Advertisements
प्रश्न
Evaluate: 203 × 197
योग
Advertisements
उत्तर
203 × 197
= (200 + 3) (200 − 3)
= (200)2 − (3)2 ......[ ∵ (a − b) (a + b) = a2 − b2]
= 40000 − 9
= 39991
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Use suitable identity to find the following product:
(3x + 4) (3x – 5)
If `x + 1/x = sqrt5`, find the value of `x^2 + 1/x^2` and `x^4 + 1/x^4`
Simplify the following product:
(x2 + x − 2)(x2 − x + 2)
Write in the expanded form: `(x + 2y + 4z)^2`
Find the value of 4x2 + y2 + 25z2 + 4xy − 10yz − 20zx when x = 4, y = 3 and z = 2.
If a + b + c = 9 and a2+ b2 + c2 =35, find the value of a3 + b3 + c3 −3abc
If \[a^2 + \frac{1}{a^2} = 102\] , find the value of \[a - \frac{1}{a}\].
Find the square of : 3a - 4b
If a + b = 7 and ab = 10; find a - b.
Evaluate, using (a + b)(a - b)= a2 - b2.
4.9 x 5.1
