2 points If x + y = 3 , x² + y²= 5 then xy is​

Question

2 points
If x + y = 3 , x² + y²= 5 then xy is​

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Madelyn 34 mins 2021-10-13T05:02:43+00:00 2 Answers 0 views 0

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    0
    2021-10-13T05:04:25+00:00

    Answer:

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    2021-10-13T05:04:26+00:00

    Answer:

    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

    Step-by-step explanation:

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14:4+1-6*5-7*14:3+5 = ? ( )