Question

What should be subtracted from 10662 to make a perfect square and the way to do it

Answer 1

Firstly we should know the shortcut method to find out square. We can search it on YouTube or by vedic math.

Now, 10662 is a number from this number what should be subtracted to get a perfect square. Firstly we should find the perfect square nearer to it. 10000, is a perfect square nearer to it. So, equation becomes,

10662 - x = 10000

10662 - 10000 = x

.·. 662 = x

Answer 2

662 must be subtracted to make it a perfect square 
now we get 10000 which is a perfect square of 100