Find the product of (x + 7)^2.

(x + 7)^2
(x + 7)(x + 7)
= x^2 + 7x + 7x+ 49
= x^2+ 14x + 49

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Asked 8/9/2013 9:34:07 AM

Updated 6/20/2014 2:25:23 PM

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This answer has been confirmed as correct and helpful.

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

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Expert Answered

Updated 121 days ago|3/20/2018 3:59:52 AM

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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)

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 121 days ago|3/20/2018 3:59:52 AM

This answer has been confirmed as correct and helpful.

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