danielburke24
31.05.2020 •
Mathematics
Help plz help me help
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Ответ:
2•4a2=8a2. 2•-2a=-4a. 2•9=18. 8a2-4a+18.
12a3-6a2+27a
+8a2-4a+18
=12a3+2a2+23a+18=D :)