Determine whether the binomial can be written as a difference of two squares.

(a) p9 - 25

(b) a8 - 18

(c) g2 - 36

- "Technically, all of the choices can be written as a difference of squares. Just find the square root of both terms and use the formula.

However, I am going to assume that your problems want to know if the expressions can be written as a difference of two squares, where and are either variables with an even exponent or a perfect square, as this is what many instructors are asking for."

- "C.) We can apply it to Choice C, since g has an even exponent and 36 is a perfect square. Applying the formula, we get:

g^2 - 36 = (g + 6) (g - 6) "

(C.) g2 - 36