√完了しました！ (a+b)^3 161615-A b 3088
A 3 + b 3 = (a + b) (a 2 – ab + b 2) (a + b) 3 = a 3 + 3a 2 b + 3ab 2 + b 3= (a +b)(a + b)(a +b) =(a + b) 3 = a 3 + b 3 + 3ab (a + b) (a − b) 3 = a 3 - b 3 - 3ab (a - b) a 3 − b 3 = (a − b) (a 2 + b 2 + ab) a 3 + b 3 = (a + b) (a 2 + b 2 − ab) (a + b + c) 3 = a 3 + b 3 + c 3 + 3 (a + b) (b + c) (c + a) a 3 + b 3 + c 3 − 3abc = (a + b + c) (a 2 + b 2 + c 2 − ab − bc − ac) If (a + b + c) = 0, The Binomial Theorem Binomial Expansions Using Pascal S Triangle Subsets A b 3088