SOLUTION: x^2+10x+25=8?

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: x^2+10x+25=8?      Log On


   

Question 453121: x^2+10x+25=8?
Answer by Sarpi(32) About Me  (Show Source):
You can put this solution on YOUR website!
The quadratic eqn system ax%5E2%2Bbx%2Bc=0 is calculated using this formula:
x=%28-b%2B-sqrt%28b%5E2-4%2Aa%2Ac%29%29%2F%282%2Aa%29
Simplifying the eqn gives: x%5E2%2B10x%2B25=8
x%5E2%2B10x%2B25-8=0
Therefore x%5E2%2B10x%2B17=0 into the formula: x=%28-10%2B-sqrt%2810%5E2-4%2A1%2A17%29%29%2F%282%2A1%29
Hence x=-7.83 and x=-2.17