SOLUTION: Can someone please help solve this using the quadratic formula ? thank you 5x^2-16x-84=0

Question 305479: Can someone please help solve this using the quadratic formula ? thank you
5x^2-16x-84=0

Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
5x^2-16x-84=0

x=(16+-sqrt[16^2-4*5*-84])/2*5
x=(16+-sqrt[256+1,680])/10
x=(16+-sqrt[1,936)/10
x=(16+-44)/10
x=(16+44)/10
x=60/10
x=6 ans.
x=(16-44)/10
x=-28/10
x=2.8 ans.
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