Question

Find the least number that must be subtracted from 4078 to make it a perfect square.​

Answer 1

Answer:

31

Step-by-step explanation:

If we calculate the square root of  4000,

4000

​

≈63.24

The whole number smaller than 63.24  is 63

Now,

63  

2

=3969

3969 is a perfect square.

So, the least number which is to be subtracted from 4000 to make it a perfect square= 4000−3969=31

Answer 2

Answer:

Step-by-step explanation:

If we calculate the square root of 4078

$\sqrt{4078}$= 63.85

The whole number smaller than 63.85  is 63

Now,

$63^{2}$= 3969

3969 is a perfect square.

So, the least number which is to be subtracted from 4078 to make it a perfect square= 4078−3969= 109