Question

then
ob. If x+y = 3, x² + y² =5, then xy is
(6) 3 (b) 5 e 1 (d) 2​

Answer 1

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X+y=3

x=3-y

putting the value of x

in this

x²+y²=5

(3-y) ²+y²=5

9-6y+y²+y²=5

2y²-6y+9-5=0

2y²-6y+4=0

2y²-4y-2y+4=0

2y(y-2)-2(y-2)=0

(2y-2) (y-2) =0

2y-2=0 or y-2=0

y=1 or y=2

so x=2 or 1

so x×y=2×1 or 1×2=2

I HOPE THIS WILL HELP YOU

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Answer 2

Answer:

2

Step-by-step explanation:

x+y=3

x=2,y=2

therfore x×y=2 d)2