SOLUTION: What two positive integers have the product of 5 and the sum of 8?

Algebra ->  Customizable Word Problem Solvers  -> Numbers -> SOLUTION: What two positive integers have the product of 5 and the sum of 8?       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



Question 480596: What two positive integers have the product of 5 and the sum of 8?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
What two positive integers have the product of 5 and the sum of 8?
-----
Equations:
xy = 5
x + y = 8
---------------
x = 8-y
---
Sustitute for "x" and solve for "y":
(8-y)y = 5
-y^2+8y-5 = 0
y^2-8y+5 =
y = [8+- sqrt(64-4*1*5)]/2
-------------
y = [8 +- sqrt(44)]/2
----
Solution is not an integer.
=======================
Cheers,
Stan H.
============