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4x2 = 8
L(obwód) = 8
II bok=3-2=1cm
3+3+1+1=8
obw 8 cm
8>9
II bok - x+2
2(x+x+2) < 9
4x+4 < 9
4x < 9-4
4x < 5 |:4
x < 1,25
w przybliżeniu:
x < 1
I bok - 1
II bok - 1+2 = 3