SOLUTION: the sum of 2 numbers is 17 and their product is 72

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Question 128189:
the sum of 2 numbers is 17 and their product is 72
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
X+Y=17 X=17-Y
XY=72
(17-Y)Y=72
17Y-Y^2-72=0
Y^2-17Y+72=0
(Y-9)(Y-8)=0
Y-9=0
Y=9 ANSWER.
Y-8=0
Y=8 ANSWER.