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.Com
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)   (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?
=
- =
- = = 1

RELATED QUESTIONS

If x= -1 and y=2 what s the value of the expression 2x^3... (answered by rfer)
If {{{1/x +1/y =10}}} and {{{x+y=2}}}, what is the value of... (answered by ikleyn)
if x-y=7, xy=-8, what is the value of... (answered by Edwin McCravy)
If x-y = 7, xy= -8, What is the value of x^2 + 3xy + y^2... (answered by Fombitz)
if x=-1 and y=2,what is the value of the expression... (answered by fractalier)
if x=-1 and y=2 what is the value of the expression... (answered by Alan3354)
if x=-1 and y=2 what is the value of expression 2x^3 -... (answered by Alan3354)
If {{{x^2+y^2=85}}} and xy=5, what is the value of {{{(1/x-1/y)^2}}}? A) 5 B) 75 C) 80 (answered by ikleyn)
If xy=10, what is the value of 2 X x/y X... (answered by jim_thompson5910)