How do you solve this 0181 04x 3x2 Please show the stepsSo

How do you solve this... 0.181 = 0.4x - 3x^2 Please show the steps.?

0.181=0.4x-3x^2

1st we will take all at one side

3x^2-0.4x+0.181=0

x= 0.4 +/- sqrt(0.16-4*3*0.181)/(6)

x=0.4 +/-sqrt(0.16-2.172)/6

x=0.4 +/-sqrt(-2,012)/6

x=0.4-+/-1.4/6

so we got two imaginary roots

x=(0.4+/- i1.4)/6 answers