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
संबंधित प्रश्न
Find the square root of the following number by division method.
900
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.
1750
A gardener has 1000 plants. He wants to plant these in such a way that the number of rows and the number of columns remain same. Find the minimum number of plants he needs more for this.
Find the squares of the following numbers using the identity (a + b)2 = a2 + 2ab + b2:
605
Find the square root the following by long division method:
1745041
Find the value of `sqrt5` correct to 2 decimal places; then use it to find the square root of `(3-sqrt(5))/(3+sqrt(5)` correct to 2 significant digits.
Find the square root of: `(1764)/(2809)`
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
Find the square root of the following by long division method.
5625
Find the square root of the following by long division method.
1.44
