Which of the following must be true for an expression to be a difference of two squares? (a) All variables are raised to an even power, (b) There are only two terms or (c)Both terms have negative coefficients.

Which of the following must be true for an expression to be a differen

1.	Which of the following must be true for an expression to be a difference of two squares? (a) All variables are raised to an even power, (b) There are only two terms or (c)Both terms have negative coefficients.
Answer» Which of the following must be true for an expression to be a difference of two squares? Solution: