# Algebra 2

posted by .

solve the equation:

x^2-x+2=0

• Algebra 2 -

No, that is not the answer I get when I plug in to the quadratic formula.

I get
(1 + sqrt7i)/2

and

(1 - sqrt7i)/2

Do you understand how I got this?

• Algebra 2 -

Where does the seven come from?

• Algebra 2 -

sqrt(b^2 - 4ac).

b is -1 and a is 1 and c is 2.

So, sqrt(b^2 - 4ac) is

sqrt(-7), or (sqrt7)i.

• Algebra 2 -

ohhhh! okay thank you!

• Algebra 2 -

You're welcome

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