1. 1.
    +2
    x*x + y*y = (x+y) * (x-y)

    (x+y) + (x-y) = 13

    (x+y) = 5

    5 + (x-y) =13

    (x-y) = 8

    (x+y) = 5
    (x-y) = 8

    taraf tarafa topla
    2x = 13
    x = 13/2

    (x+y) = 5

    [(13/2) + y] = 5

    y = 5 - 13/2

    y = -3/2
    ···
   tümünü göster