SOLUTION: 1.if x+y = 2 and x^2+y^2= 2 what is the value of xy? 2. if x=-5/8 and y=-1/2 what is the value of the expression -2x-y^2?

Algebra ->  Finance -> SOLUTION: 1.if x+y = 2 and x^2+y^2= 2 what is the value of xy? 2. if x=-5/8 and y=-1/2 what is the value of the expression -2x-y^2?       Log On


   

Question 1101017: 1.if x+y = 2 and x^2+y^2= 2 what is the value of xy?
2. if x=-5/8 and y=-1/2 what is the value of the expression -2x-y^2?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
1.if x+y = 2 and x^2+y^2= 2 what is the value of xy? 1
:
2. if x =-5/8 and y=-1/2 what is the value of the expression -2x-y^2?
-2%28-5%2F8%29+-+%28-1%2F2%29%5E2 =
10%2F8-1%2F4 =
5%2F4-1%2F4 = 4%2F4 = 1