SOLUTION: Solve the following equation by using the quadratic formula. (Enter solutions from smallest to largest. If there is one solution with a multiplicity of two, enter it in both answer

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Solve the following equation by using the quadratic formula. (Enter solutions from smallest to largest. If there is one solution with a multiplicity of two, enter it in both answer      Log On


   

Question 449447: Solve the following equation by using the quadratic formula. (Enter solutions from smallest to largest. If there is one solution with a multiplicity of two, enter it in both answer boxes.)
9x^2+18x+2=0
x=?
x=?
Please show me the steps to get the answer.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
9x^2+18x+2=0
a=9,b=18 ,c=2

b^2-4ac= 324-72
b^2-4ac= 252
sqrt%28252%29=15.87
x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29
x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29
x1=(-18+15.87)/18
x1=-0.12
x2=(-18-15.87)/18
x2= -1.88