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Автор - araa3564

a=-4i+2j-3k, b=-3j+5k, c=6i+6j-4k, a)5a,-b,3c; б)-7а,4c; в) 3a,9b; г)a,c; д)3а,-9b,4c

Ответ

Автор - zveryakovanata

Ответ:

a) 5a= -20i+10j-15k    -b= 3j-5k   3c= 18i+18j-12k  б) -7а=-7(4i+2j-3k)= -28i-14j+21k)  4с= 24i+24j-16k  в) 3a=-12i+6j-9k     )    3a= -12i+6j-9k    -9b=27j-45k    4c= 24i+24j-16k

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