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3 years ago

Find xy if x + y=3, x^2 + y^2 = 5

Mathematics

1 answer:

Vesna [10]3 years ago

8 0

Answer:

mark me

Step-by-step explanation:

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 MARK ME BRAINLIEST

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lutik1710 [3]

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Step-by-step explanation:

To find $y$ , we need to eliminate $x$ in this system of equations:

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Norma-Jean [14]

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2 years ago

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Wewaii [24]

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Then you can draw a line connecting the two points.

I hope this helps :)

Let me know if you need further explanation

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