Mathematics
Senior High
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なんで、三乗しているんですか
(5) = {(a+b)(a-ba+a2b²+64)}2
={(a2-b²)(a+a²b²+64)]2
= {(a ²) ³ - (62) 312 =(a6-66)2
--
= a a 12-2a6b6+612
C
D
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