# SOLUTION: My question is relating to 5x=-4x^2-2 I know I use the qadratic equation of x= -b+- b^2-4ac/2a. I can't put the square root sign in the fornula. anyways, near the end I have

Algebra ->  Algebra  -> Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: My question is relating to 5x=-4x^2-2 I know I use the qadratic equation of x= -b+- b^2-4ac/2a. I can't put the square root sign in the fornula. anyways, near the end I have       Log On

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 Click here to see ALL problems on Quadratic Equations Question 46159: My question is relating to 5x=-4x^2-2 I know I use the qadratic equation of x= -b+- b^2-4ac/2a. I can't put the square root sign in the fornula. anyways, near the end I have a - on the top and bottom. do i only use the (i) on the top, or both?Answer by Earlsdon(6294)   (Show Source): You can put this solution on YOUR website!Let's see. Solve: Rewrite in standard form. You are correct in using the quadratic formula because this does not factor. Here, a = 4, b = 5, and c = 2 The roots are: