SOLUTION: Solve by applying the Quadratic Formula; all radicals should be simplified as far as possible. Show your work. x^2 - 4x - 7 = 0

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Solve by applying the Quadratic Formula; all radicals should be simplified as far as possible. Show your work. x^2 - 4x - 7 = 0      Log On


   

Question 280924: Solve by applying the Quadratic Formula; all radicals should be simplified as far as possible. Show your work.
x^2 - 4x - 7 = 0
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
x^2 - 4x - 7 = 0
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x=(4+-sqrt[-4^2-4*1*-7])/2*1
x=(4+-sqrt16+28])/2
x=(4+-sqrt44)/2
x=(4+-6.63325)/2
x=(4+6.63325)/2
x=10.63325)/2
x=5.317 ans.
x=(4-6.63325)/2
x=(-2.63325)/2
x=-1.317 ans.