Mathematics
Senior High

X³-3X -2の因数分解の仕方を教えてください。

因数分解

Answers

X³-3X -2

=(X+1)×A

となるAを探すと(X+1)(X-2)

(X+1)(X+1)(X-2)

よって

(X+1)^2(X-2)

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