(x + y)(y + x) = a. x 2 y 2 b. y 2 x...

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(–x + y)(–y + x) =

a. x2 – y2

b. y2 – x2

c. 0

d. –(x – y)2

e. (y – x)2

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1014 Practice Questions For The New GRE

ISBN: 9780375429682

2nd Edition

Authors: The Princeton Review

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