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Help 12

 Mar 9, 2018
 #1
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2x      -     x+ 7

___         ____

x - 7          x

 

 

(2x)x  -  (x + 7) (x - 7)

_________________

       x (x - 7)

 

2x^2  - [ x ^2  - 49 ]

_______________

    x ( x - 7)

 

2x^2  - x^2   +   49

_______________

    x ( x - 7)

 

x^2  + 49

________

 x  ( x - 7)     

 

 

cool cool cool       

 Mar 9, 2018

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