Advertisements
Advertisements
प्रश्न
Find the squares of the following numbers using the identity (a + b)2 = a2 + 2ab + b2:
405
Advertisements
उत्तर
On decomposing:
405 = 400 + 5
Here, a = 400 and b = 5
Using the identity (a + b)2 = a2 + 2ab + b2:
4052 = (400 + 5)2 = 4002 + 2(400)(5) + 52 = 160000 + 4000 + 25 = 164025
APPEARS IN
संबंधित प्रश्न
Find the square root of the following number by division method.
7921
Find the square root of the following number by division method.
900
Find the squares of the following numbers using the identity (a + b)2 = a2 + 2ab + b2:
605
Find the square root the following by prime factorization.
1156
Write the prime factorization of the following number and hence find their square root.
7056
Find the square root of the following by long division method:
3226694416
Find the square root of the following by long division method:
3915380329
Square of which of the following numbers will not have 6 at their unit’s place :
(i) 35
(ii) 23
(iii) 64
(iv) 76
(v) 98
Find the least number that must be subtracted to 6666 so that it becomes a perfect square. Also, find the square root of the perfect square thus obtained
Find the greatest number of three digits that is a perfect square.
