Mathematics
Senior High

この証明の仕方だと間違いでしょうか?

4 次の等式が成り立つことを示せ。 (1) AD+DC+CB=AB AB+CD=AD+CB
4 (²) AB - CD - AD-D AB - c CB = AP - CD AB + BC = AB - PC Ac = Ac 2.2. ³ + c³ = ó + co "1
ベクトル ベクトルの成分

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