{4, 7}

{4, 8}

{4, 5, 6, 8}

{10, 7}

12

9

-11

11

(a-c)(a-b)(b-c)

(a-b)(b-c)(c-a)

(a-b)(c-b)(c-a)

(a-b)(a-c)(a-b)

2

1

3

4

x=5

x=6, y=3

x=7, y=3

x=4, y=4

10, 2

2, 1

10, 1

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