If x+y=3, x square + y square = 5 then xy is​

Question

If x+y=3, x square + y square = 5 then xy is​

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Remi 3 weeks 2021-09-06T04:50:47+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-09-06T04:51:53+00:00

    Answer: xy=2

    Step-by-step explanation:

    x+y=3(given)

    x^2+y^2= 5(given)

    (x+y)^2=x^2+y^2+2xy

    substitute the values.

    (3)^2=(5)+2xy

    9=5+2xy

    2xy=9-5

    2xy=4

    xy=4/2

    xy=2

    0
    2021-09-06T04:52:29+00:00

    Answer:

    ans.

    (x + y )^2 = x^2 + y^2 + 2xy

    = ( 3 ) ^2 = 5 + 2xy

    = 9 = 5 + 2xy

    = 9 -5 = 2xy

    = 4 = 2xy

    = xy = 2 {ans. }

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