lilpeepxliltracy
04.03.2021 •
History
Why is Black History Month significant? How does black history help to tell the story of what it means to be an American? How have African-Americans enriched that story? What lessons can be learned from the experiences of black history makers?
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Ответ:
Ответ:
12x^2; 21
Step-by-step explanation:
4x^2-3=4×1.5^2-3=6
4x^2-2=4×1.5^2-2=7
4x^2-1=4×1.5^2-1=8
6+7+8=p=21