SOLUTION: How do I solve x2+4x = 5 by using the quadratic formula?

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: How do I solve x2+4x = 5 by using the quadratic formula?      Log On


   



Question 868794: How do I solve x2+4x = 5 by using the quadratic formula?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
x^2 + 4x - 5 = 0 |format ax^2 + bx + c
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x+=+%28-4+%2B-+sqrt%28+16%2B20%29%29%2F%282%29+
x+=+%28-4+%2B-+sqrt%28+36%29%29%2F%282%29+
x+=+%28-4+%2B-+6%29%2F%282%29+
x = 2/2 =1 and x = -10/2 = -5