Advertisements
Advertisements
प्रश्न
Find the squares of the following numbers using the identity (a − b)2 = a2 − 2ab + b2:
498
Advertisements
उत्तर
Decomposing: 498 = 500 − 2
Here, a = 500 and b = 2
Using the identity (a − b)2 = a2 − 2ab + b2:
4982 = (500 − 2)2 = 5002 − 2(500)(2) + 22 = 250000 − 2000 + 4 = 248004
APPEARS IN
संबंधित प्रश्न
Find the square root of the following number by division method.
4489
Find the square root of the following number by division method.
1024
Find the length of the side of a square whose area is 441 m2.
Find the square of the following number using the identity (a − b)2 = a2 − 2ab + b2:
999
Write the possible unit's digit of the square root of the following number. Which of these number odd square root?
998001
Find the square root the following by long division method:
1745041
Find the least number which must be subtracted from the following numbers to make them a perfect square:
194491
Which of the following numbers will not have 1 (one) at their unit’s place :
(i) 322
(ii) 572
(iii) 692
(iv) 3212
(v) 2652
A greeting card has an area 90 cm2. Between what two whole numbers is the length of its side?
Find the square root of the following by long division method.
1369
