Find the product of (x + 7)^2.
(x + 7)^2 (x + 7)(x + 7) = x^2 + 7x + 7x+ 49 = x^2+ 14x + 49
Question
Updated 6/20/2014 2:25:23 PM
Edited by andrewpallarca [6/20/2014 2:25:20 PM], Confirmed by andrewpallarca [6/20/2014 2:25:23 PM]
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Solve the following system and show all of your work. 3y - 2x = 11 y + 2x = 9
Question
Updated 242 days ago|3/20/2018 3:59:52 AM
3y - 2x = 11 ;
y + 2x = 9;

(3y - 2x = 11) + (y + 2x = 9) ;
4y = 20 ;
y = 20/4 ;
y = 5 ;

5 + 2x = 9 ;
2x = 9 - 5 ;
2x = 4 ;
x = 4/2 ;
x = 2 ;

Solution set: (2, 5)
Added 242 days ago|3/20/2018 3:59:52 AM
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