Find the roots in simplest a+bi form y=2x^2-4x+5
[Math]\frac{-b+-\sqrt{ b^2-4ac}}{2a}[/tex]
[Math]\frac{4+-\sqrt{16-4(2)(5)}}{2(2)}[/tex]
[Math]\frac{4+-\sqrt{24}}{4}[/tex]
to put in a+bi form I believe that that it has to be a perfect square and that I can not have a radical in the answer? Please help with what I am missing Thanks
Technically speaking we should keep going to getSo are we able to have a radical and a fraction in the answer in simple a+bi form?
then cancel common factors with the denominator, but in reality I would expect the answer given by Mathstud to be worth full marks. Radicals and fractions are perfectly appropriate.