Question

 решите уравнение : 6х^2+x-1=0

Answer 1

 

$<var>6x^2+x-1=0\\\\ D = 1 + 4*6 = 25\\\\ x_1 = \frac{-1+5}{12} = \frac{1}{3}\\\\ x_2 = \frac{-1-5}{12} = -\frac{1}{2}</var>$

 

Answer 2

6х^2+x-1=0

D=1+24=25=5^2

x1=(-1+5)/12=4/12=1/3

x2=(-1-5)/12=-6/12=-1/2