Mathematics
Senior High
Solved
(a^3-27b^3)はどうやってできたんですか??
28という数字はどこに消えたのでしょうか、、
=
il
ニ
A6 - 28 a³ b³ + 27 hº
3
(a³)² - 28 a³ b³ + 27 (6³) ²
3
3
(a ³-h²³) (a³-27h²³)
(a-b) (a² + ah+b²³) (a-36) (a² + 3h+9 h
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