1.
The 2 terms must be perfect squares.
One or both terms could be a constant.
The exponents could be an even number other than 2.
2.
You divide the exponent by 2.
:For example, The square root of x^4 is x^(4/2) = x^2.
3.
The general form for the difference of 2 squares is:
a^2 - b^2 = (a - b)(a + b).
So
64v^4 - 225w^10 is a difference of 2 squares:
The 2 terms have square roots 8v^2 and 15w^5 respectively.
64v^4 - 225w^10 = (8v^2 - 15w^5)(8v^2 + 15w^5).
