Question

find the least number which must be subtracted from 7581 to obtain a perfect square ​

Answer 1

Answer:

By finding the square root of 7581 (which is not a perfect square)

WE HAVE TO DO IT  by division method

, we get

87

Nearest whole number=87.

Square of 87=87*87=7569.

The difference between 7581 and 7569

=7581-7569

=12.

Therefore,  to make it a perfect square , 12 should be subtracted from

it.Then it becomes the square of 87.

This perfect square is 87*87=7569.

Square root of this perfect square=√7569=+87 or -87.

Step-by-step explanation:

Answer 2

Answer:

If we subtract 7581-12 the answer is 7569,

also √7569 = 87 or 7568 = (87)2

The least number required is 12.