Given that x2 – y2 = 144 and x + y = 9, determine the values of: a. x – y  b. x2 + y2– 2xy

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter12: Quadratic Functions
Section12.2: Completing The Square
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Given that x2 – y2 = 144 and x + y = 9, determine the values of:
a. x – y 
b. x2 + y2– 2xy 

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