+0  
 
0
489
2
avatar+1461 

Help me, please

 

simplify this Fraction

 

a-b/a+b-2ab/a-b2

 Nov 30, 2017
 #1
avatar+1461 
0

I need help with this

 Nov 30, 2017
 #2
avatar+111326 
+1

I guess this is  ???

 

[ a - b ] /  [ a + b ]    -  {2ab ]  / [ a^2 - b^2 ]

 

Factor the denominator of the second fraction

 

[ a - b ]  /  [ a + b ]  -   [ 2ab ] /  [ (a + b) ( a - b) ]

 

Multiply the first fraction by  [ a - b]  in the numerator and denominator

 

 

[ (a - b) (a - b)] / [ (a + b) (a - b) ]  -  [2ab ] / [ (a + b) (a - b) ]

 

[ (a - b) (a - b) - 2ab ] / [ (a + b) ( a - b) ]

 

[ a^2  - 2ab + b^2  - 2ab ] / [ (a+ b) (a - b) ]

 

[ a^2  - 4ab + b^2 ]  / [ a^2  - b^2 ]

 

 

cool cool cool

 Nov 30, 2017
edited by CPhill  Nov 30, 2017

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