Question

solve using quadratic formula..
5u^2-2u+1=0

Answer 1

Do you know what the quadratic formula is?

Answer 2

i have it broken down to \[2\pm \sqrt{-16}/10\]

Answer 3

That looks correct

Answer 4

yes i do.... im just confused with the simplifying part of this equation...answer is \[1/5\pm2/5i\]

Answer 5

sure, i actually got it by \[2\pm\sqrt{4-20}/10\]

Answer 6

\[\sqrt{-16} = \sqrt{-1 * 16} = \sqrt{-1} * \sqrt{16}\]

That's true right?

Answer 7

yes

Answer 8

So you simplify the root 16 to 4, and sqrt -1 to i

Answer 9

And you get something like
\[(2 +/- 4i ) / 10\]

Answer 10

Then you just take it one step more, and simplify the divide by 10 to each term?

Answer 11

thanks

Answer 12

No problem