В пространстве заданы точки P(2;−1;0),Q(−5;−2;−3),R(0;7;4),T(−3;5;10). Найдите скалярное произведение заданных векторов:

PQ→⋅RT→=
PQ→⋅QR→=
QT→⋅RT→=
TQ→⋅QR→=
TP→⋅PQ→=

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