Question

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

c. both terms have negative coefficients)))


Answers:
O A. a and
O B. a, b, and c
OC. b and
O D. a and b

Answer 1

D

Explanation:

A difference of squares is represented in general as

a² - b²

Both variables have an even power (2) → a

There are only two terms → b