If x 2 y 2 = 49 and x y = 7, then x =?

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If x− y= 49 and x − y = 7, then x =?
F. 14
G. 7
H. 4
J. −4
K. −7

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10 ACT Practice Tests

ISBN: 9780071591461

2nd Edition

Authors: Steven Dulan

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