Question

-4x² +17=-6x² +76 

valendo 20 pontos quem responderrrr

Answer 1

-4x² +17=-6x² +76 
-4x²+6x²=76-17
2x²=59
$x^{2} = \frac{59}{2}$
$x= +\sqrt{ \frac{59}{2}$
$x=- \sqrt{ \frac{59}{2}$

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Answer 2

$- \ 4x^2 \ + \ 17 \ = \ - \ 6x^2 \ + \ 76 \\ \\ - \ 4x^2 \ + \ 6x^2 \ = \ 76 \ - \ 17 \\ \\ 2x^2 \ = \ 59$

$x^2 \ = \ \frac{59}{2} \\ \\ x \ = \ \pm \ \sqrt\ \frac{59}{2}$