Question

2 x 2 - 14 = 0 qual é o resultado dessa equacao d 2 grau?

Answer 1

Olá

$\mathtt{2x^2-14=0}\\\\\mathtt{2x^2=0+14}\\\\\mathtt{2x^2=14}\\\\\mathtt{\frac{2x^2}{2}=\frac{14}{2}}\\\\\mathtt{x^2=7}\\\\\huge\orange{\boxed{\mathtt{x'=\sqrt{7},\:x''=-\sqrt{7}}}}$

Espero ter ajudado!

Answer 2

Resposta:

X' = + \/7

X" = - \/7

Explicação passo-a-passo:

2 x^2 - 14 = 0

2x^2 = 14

X^2 = 14/2

X^2 = 7

X = +/- \/7

R.:

X' = + \/7

X" = - \/7