SOLUTION: Solve using the quadratic formula: x2 – 7x – 1 = -7

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Solve using the quadratic formula: x2 – 7x – 1 = -7       Log On


   



Question 147432: Solve using the quadratic formula:
x2 – 7x – 1 = -7

Answer by oscargut(2103) About Me  (Show Source):
You can put this solution on YOUR website!
x2 – 7x – 1 = -7
x^2-7x+6=0
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+=
x+=+%287+%2B-+sqrt%28+49-4%2A1%2A6+%29%29%2F%282%29+=
x+=+%287+%2B-+sqrt%2825%29%29%2F%282%29+=
x+=+%287+%2B-+5%29%2F%282%29+
so x=6 or x= 1