SOLUTION: x/3= 4/x+1

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Question 320509: x/3= 4/x+1
Answer by checkley77(12844) About Me  (Show Source):
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x/3=4/x+1
x/3-4/x=1
(x*x-4*3)/3x=1
(x^2-12)/3x=1 cross multiply.
x^2-12=3x
x^2-3x-12=0
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x=(3+-sqrt[-3^2-4*1*-12])/2*1
x=(3+-sqrt[9+48])/2
x=(3+-sqrt57)/2
x=(3+-7.55)/2
x=(3+7.55)/2
x=10.55/2
x=5.275 ans.
x=(3-7.55)/2
x=-4.55/2
x=-2.275 ans.