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11 May, 05:27

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

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Answers (1)
  1. 11 May, 05:42
    0
    C.

    An example of this is:

    a² - b²

    Where both terms have an even power and there are only two terms.
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