melodeelathrom
15.08.2021 •
Mathematics
If A= (4, 4, -2)(-7, -3, 2)(2, 10, -9) and B= (7, 2, 4)(5, -9, 5)(5, -10, -5)find -2A+7B
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Ответ:
-9ab3a3b-52
Step-by-step explanation:
-8a3b+3a2b2-52+5a2b3a3b+7-9a2b2
-8a3b-6a-52+5a2b3a3b
-14a3b-52+5a2b3a3b
-9ab3a3b-52