Mr. fantastic can you explain the second method of "real coefficients" a bit more thoroughly. I'm still a little confused how you got the initial equation.
Mr. fantastic can you explain the second method of "real coefficients" a bit more thoroughly. I'm still a little confused how you got the initial equation.
The only way to make disappear such a complex number is to multiply by its conjugate.
Let be the conjugate of z.
See why these are real numbers by noting that (therefore, )