SOLUTION: qudratic equation x^2+3x-5=0

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: qudratic equation x^2+3x-5=0      Log On


   

Question 703182: qudratic equation x^2+3x-5=0
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

x+=+%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29

x+=+%28-%283%29%2B-sqrt%28%283%29%5E2-4%281%29%28-5%29%29%29%2F%282%281%29%29 Plug in a+=+1, b+=+3, c+=+-5

x+=+%28-3%2B-sqrt%289-%28-20%29%29%29%2F%282%29

x+=+%28-3%2B-sqrt%289%2B20%29%29%2F%282%29

x+=+%28-3%2B-sqrt%2829%29%29%2F2

x+=+%28-3%2Bsqrt%2829%29%29%2F2 or x+=+%28-3-sqrt%2829%29%29%2F2

The two solutions are x+=+%28-3%2Bsqrt%2829%29%29%2F2 or x+=+%28-3-sqrt%2829%29%29%2F2