SOLUTION: one number is 3 more than another. if their product is 80, find the 2 positive numbers.

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Question 304492: one number is 3 more than another. if their product is 80, find the 2 positive numbers.
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
x(x+3)=80
x^2+3x-80=0
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x=(-3+-sqrt[362-4*1*-80])/2*1
x=(-3+-sqrt9+320])/2
x=(-3+-sqrt329)/2
x=(-3+-18.138)/2
x=-3+18.138)/2
x=15.138/2
x=7.569 ans
7.569+3=10.569 ans.
Proof:
7.569*10.569=80
80~80