Question

resolva a equação do 2º grau 6x elevado a dois +×-1=0

Answer 1

Resposta:

S = {2,-3}

Δ = $(1^{2} )-4.6.(-1)$

Δ = $1+24$

Δ = $25$

$x=\frac{-(1)\frac{+}{} \sqrt{25} }{2}$  

$x^{I} = \frac{-1+5}{2} = \frac{4}{2} = 2$

$x^{II}= \frac{-1-5}{2}=\frac{-6}{2} =-3$