Question

resolva a equação do 2 grau. 12x2-x-1=0

Answer 1

Δ=49

x=1+ou-$\sqrt{49}$/2×12

$x_{1}=8/24=1/3 x^{2}=6/24=1/4$

Answer 2

a=12 b=-1 c=-1
▲=(-1)2-4.12. (-1)
▲=1+47
▲=49
x=-(-1)+-raiz quadrada de 49
2.12

x=1+-7
24
x1=8/24=1/3
x2=6/24=1/4
2