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If x is a real number, find \( x^2+2x(5-x)+(5-x)^2.\)

tertre  Apr 11, 2017
 #1
avatar+193 
0

x^2 + 2x(5 - x) + (5- x)^2

x^2 + 2x(5) + 2x(-x) + 25 - x^2

x^2 - x^2 + 10x - 2x^2 + 25

-2x^2 + 10x + 25

 

If anyone wants to finish this or if it is finish tell me how I did.

Snappingtunic99  Apr 11, 2017
 #2
avatar+87293 
+2

x^2  + 2x(5 - x) + (5 - x)^2

 

x^2  + 10x  - 2x^2  + x^2  - 10x + 25 =

 

25

 

 

cool cool cool

CPhill  Apr 11, 2017
 #3
avatar+2765 
0

Thanks !!!!!!!!!!!!!!1

tertre  Apr 11, 2017

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