Mathematics
Junior High
Resolved
線を引いた部分はなぜそうなるのですか?
(a+1)(a+1)ではないのですか?
(a)= atzap+b
(3) (a + 1)²(a −1)²(a² + 1)²
(a+1) (-1) (a+1) (a-1) (0³+15²
= (a²-1)²(a²³² + 1)² = (a²+1) (a²-1) (a²+1) (0²-1) = (a +-1)² = a³ - 2a+ + 1
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