SOLUTION: The value of x^2+y^2 when x+y=5 and xy=3 is A) 18 B) 19 C) 20 D) 21

Question 1132296: The value of x^2+y^2 when x+y=5 and xy=3 is
A) 18
B) 19
C) 20
D) 21
Found 2 solutions by Alan3354, ikleyn:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
The value of x^2+y^2 when x+y=5 and xy=3
--------------
x+y=5
x^2 + 2xy + y^2 = 25
-------
2xy = 6
x^2 + y^2 = 19

Answer by ikleyn(52781) (Show Source): You can put this solution on YOUR website!
.

+ = = = 25 - 6 = 19. ANSWER Option B).

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