$$(a - b)^2$$

How to solve the difference of two whole square numbers

When the difference of two square numbers is asked, we can apply the following formula.

$$(a - b)^2 = a^2 + b^2 - 2ab$$

Let us work it out with an example:-

let a=64 and b=35

$$(a-b)^2 = a^2 + b^2 - 2ab$$

$$(64-35)^2 = 64^2 + 35^2 - (2*64*35)$$

4096+1225-4480

841