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1. a=pierw(144)=12
obwód O=4*12=48
2.
b) po ostatnim "=" mamy
5a^2-11ab
c)=8k^2 -4k+2k-1-(k^2 -3k-k+3)=8k^2-2k-1-k^2+3k+k-3=7k^2 +2k-4
3.
P=(8,3+3,7)*h/2=22 /*2
12*h=44
h=44/12=11/3
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1. a=pierw(144)=12
obwód O=4*12=48
2.
b) po ostatnim "=" mamy
5a^2-11ab
c)=8k^2 -4k+2k-1-(k^2 -3k-k+3)=8k^2-2k-1-k^2+3k+k-3=7k^2 +2k-4
3.
P=(8,3+3,7)*h/2=22 /*2
12*h=44
h=44/12=11/3