4.
0,125-0,5t-t²+t³=(t³+0,125)-(t²+0,5t)=(t+0,5)(t²-0,5t+0,25)-t(t+0,5)=
=(t+0,5)(t²-0,5t+0,25-t)=(t+0,5)(t²-1,5t+0,25)
5. cм рис.
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4.
0,125-0,5t-t²+t³=(t³+0,125)-(t²+0,5t)=(t+0,5)(t²-0,5t+0,25)-t(t+0,5)=
=(t+0,5)(t²-0,5t+0,25-t)=(t+0,5)(t²-1,5t+0,25)
5. cм рис.