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V+3 V+3
___ + ___ * (v+1)
1-v v-1
* умножить
V+3 V+3 V+3 (v+3)(v+1) v+3 - (v^2+4v+3) -v^2-3v v^2+3v
___ + ___ * (v+1) = ____ - _________ = _______________ = _________= _______
1-v v-1 1-v 1-v 1-v 1-v v-1
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V+3 V+3 V+3 (v+3)(v+1) v+3 - (v^2+4v+3) -v^2-3v v^2+3v
___ + ___ * (v+1) = ____ - _________ = _______________ = _________= _______
1-v v-1 1-v 1-v 1-v 1-v v-1