Pandagurl2125
11.12.2019 •
Mathematics
5) is 3 a zero (or root) of f(x) = x3 - 9x2 + 11x + 21?
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Ответ:
Yes
Step-by-step explanation:
f(x) = x³ − 9x² + 11x + 21
f(3) = (3)³ − 9(3)² + 11(3) + 21
f(3) = 27 − 81 + 33 + 21
f(3) = 0
Ответ:
Day 2 = 287 + 96 = 382
Total = 382 + 287 = 668 CDs in all.