SOLUTION: We need help solving the following equation: x^2-8x=2 Thank You for your help

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: We need help solving the following equation: x^2-8x=2 Thank You for your help      Log On


   

Question 9169: We need help solving the following equation:
x^2-8x=2
Thank You for your help
Answer by lucky83(12) About Me  (Show Source):
You can put this solution on YOUR website!
x^2-8x-2=0
For this problem you need to use the quadratic equation

x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ (note a=1, b=-8, c=-2)

x+=+%288+%2B-+sqrt%28+%28-8%29%5E2-%284%2A1%2A-2%29+%29%29%2F%282%2A1%29+
x+=+%288+%2B-+sqrt%28+72+%29%29%2F%282%2A1%29+
x+=+%288+%2B-+6%2Asqrt%28+2+%29%29%2F%282%2A1%29+
x+=+%284+%2B-+3%2Asqrt%28+2+%29%29