Mathematics, 02.10.2019 06:00, 1234Shutthedoor

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

a. a, b, and c
b. b and c
c. a and b
d. a and c

Answers: 2

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Which of the following must be true for an expression to be a difference of two squares?