SOLUTION: The sum of two numbers is 7. Their product is −170. Find the numbers.

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Question 973628: The sum of two numbers is 7. Their product is −170. Find the numbers.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=7
xy=-170
x=7-y
(7-y)*y =-170
7y-y^2=-170
y^2-7y-170=0
(y-17)(y+10)=0
y=17, y=-10
Pick one root, and the other is x.
x+y=7
xy= -170