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b = x + 1
c = x + 2
z tw. Pitagorasa
a^ + b^ = c ^
3 ^ + (x + 1)^ = (x + 2)^
9 + x^ + 2x + 1 = x^ + 4x +4
- 2x = -6
x = 3
P = 1/2 ab
P = 1/2 * 3 * 4
P = 6