SOLUTION: x^2 - 3x +7 = 0 Find the exact solution. I have to use the quadratic formula. could someone explain how to do this?

Algebra ->  Trigonometry-basics -> SOLUTION: x^2 - 3x +7 = 0 Find the exact solution. I have to use the quadratic formula. could someone explain how to do this?      Log On


   

Question 282480:
x^2 - 3x +7 = 0
Find the exact solution.
I have to use the quadratic formula.
could someone explain how to do this?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
x^2-3x+7=0
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x=(3+-sqrt[-3^2-4*1*7])/2*1
x=(3+-sqrt[9-28])/2
x=(3+-sqrt-19)/2
x=(3+-4.359i)/2
x=3+4.359i)/2
x=3/2+-4.359i/2
x=1.5+-2.18i ans.