+0  
 
0
106
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find a and b

 

 Jul 11, 2020
 #1
avatar+28021 
+1

Multiply the L term of the equation by    (  4+sqrt15) / (4+sqrt15) 

 to get     (4+sqrt15)^2 / (1) 

Mutiply the next term be               (4-sqrt15)/ (4-sqrt15) to get

  (4-sqrt15)^2 / (1)  

 

then you have

 

16 +8 sqrt 15  + 15            + 16 - 8sqrt15 +15    =   62 + 0 sqrt15

 Jul 11, 2020

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