please let me know fast it's urgent
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Answered by
0
Answer:
2
Explanation:
(x+y)²=9
x²+2xy+y²=9
5+2xy=9
2xy=4
xy=2
Answered by
1
Explanation:
Given
x+y=3 , x^2 +y^2=5
We know that (x+y)^2= x^2 + y^2 +2xy
(3)^2 = 5+2xy
9= 5+2xy
9-5= 2xy
4=2xy
4/2 = xy
So xy = 2
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