Advertisements
Advertisements
प्रश्न
Find the square of the following number using the identity (a − b)2 = a2 − 2ab + b2:
395
Advertisements
उत्तर
Decomposing: 395 = 400 − 5
Here, a = 400 and b = 5
Using the identity (a − b)2 = a2 − 2ab + b2:
3952 = (400 − 5)2 = 4002 − 2(400)(5) + 52 = 160000 − 4000 + 25 = 156025
APPEARS IN
संबंधित प्रश्न
Find the least number which must be subtracted from the following number so as to get a perfect square. Also find the square root of the perfect square so obtained.
1989
Find the square of the following number using the identity (a − b)2 = a2 − 2ab + b2:
99
Find the square of the following number by visual method:
95
Find the square root the following by long division method:
291600
Find the square root the following by long division method:
62504836
Find the square root of: `0.01 + sqrt(0.0064)`
Find the square root of 7.832 correct to: 2 decimal places
Find the square root by long division method
1764
Find the square root by long division method
6889
By what smallest number should 216 be divided so that the quotient is a perfect square. Also find the square root of the quotient.
