+0  
 
+1
173
1
avatar+139 

Define \(E(a,b,c) = a \cdot b^2 + c\) . What value of \(a\) is the solution to the equation \(E(a,4,5) = E(a,6,7)\) 

azsun  Dec 29, 2017
 #1
avatar+87641 
+3

We have that

 

a*4^2 + 5  = a*6^2  + 7   simplify

 

16a + 5  =  36a + 7  rearrange as

 

-2  =  20a   divide both sides by  20

 

-2/20  =  a   =  - 1/10

 

 

cool cool cool

CPhill  Dec 29, 2017

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