Advertisements
Advertisements
Question
Find the squares of the following numbers using the identity (a + b)2 = a2 + 2ab + b2:
605
Advertisements
Solution
On decomposing:
605 = 600 + 5
Here, a = 600 and b = 5
Using the identity (a + b)2 = a2 + 2ab + b2:
6052 = (600 + 5)2 = 6002 + 2(600)(5) + 52 = 360000 + 6000 + 25 = 366025
RELATED QUESTIONS
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 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.
252
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 square of the following number using the identity (a − b)2 = a2 − 2ab + b2:
495
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:
505
Write the possible unit's digits of the square root of the following numbers\. Which of these number is odd square root?
9801
Find the square root the following by long division method:
120409
Find the square root of: `(1764)/(2809)`
Find the least number which must be added to 5483 so that the resulting number is a perfect square.
