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The roots of 7x^2+x-5=0 and a and . Compute (a - 4) + (b - 4).

 Apr 29, 2022

Best Answer 

 #1
avatar+2437 
+1

We can rewrite \((a-4)+(b-4)\) as \(a+b-8\)

 

Using Vieta's formula, the sum of the roots is \(\large { -b \over a}\). Substituting the values, we find that \(a+b= -{1 \over 7}\)

 

Substracting 8 from this will yield you the answer...

 Apr 29, 2022
 #1
avatar+2437 
+1
Best Answer

We can rewrite \((a-4)+(b-4)\) as \(a+b-8\)

 

Using Vieta's formula, the sum of the roots is \(\large { -b \over a}\). Substituting the values, we find that \(a+b= -{1 \over 7}\)

 

Substracting 8 from this will yield you the answer...

BuilderBoi Apr 29, 2022

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