Question

6 x ao quadrado + x - 1= 0

Answer 1

$6 x^{2} +x-1=0$

Fórmula de Bhaskara:

$(1) ^{2} -4*(6)*(-1)\\\\1+24=25\\\\ \frac{(-1)+- \sqrt{25} }{2*(6)} \\\\ \frac{-1+-5}{12} \\\\x'= \frac{-1+5} {12} = \frac{4}{12} = \frac{1}{3} \\\\x''= \frac{-1-5}{12} = \frac{-6}{12}= \frac{-1}{2}$

Answer 2

6x²+x-1=o
a= 6
b=1
c=-1
delta = b²-4.a.c
1²-4.6.(-1)
delta =1+24
delta =25
x = -b + ou - √ delta
-1 + ou -5
x= -1-5÷2=+3
x=-1+5÷2=-3
conjunto solução:
(-3,+3)