Advertisements
Advertisements
प्रश्न
Find the square of the following numbers using the identity (a + b)2 = a2 + 2ab + b2:
209
Advertisements
उत्तर
On decomposing:
209 = 200 + 9
Here, a = 200 and b = 9
Using the identity (a + b)2 = a2 + 2ab + b2:
2092 = (200 + 9)2 = 2002 + 2(200)(9) + 92 = 40000 + 3600 + 81 = 43681
APPEARS IN
संबंधित प्रश्न
Find the number of digits in the square root of the following numbers (without any calculation).
4489
Find the least number which must be added to the following number so as to get a perfect square. Also find the square root of the perfect square so obtained.
6412
Find the square of the following number by visual method:
95
Find the square root the following by long division method:
62504836
Find the square root the following by long division method:
6407522209
Find the least number which must be subtracted from the following numbers to make them a perfect square:
4401624
A greeting card has an area 90 cm2. Between what two whole numbers is the length of its side?
`sqrt(1.96)` = ______.
The square root of a perfect square of n digits will have `((n + 1)/2)` digits, if n is odd.
What is the least number that should be added to 6200 to make it a perfect square?
