Mathematics
Junior High
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✨ Best Answer ✨

(x^2+2)^2=x^4+4x^2+4 を利用して

(与式)
= x^4+4x^2+4-x^2
=(x^2+2)^2-(x)^2
=(x^2+2+x)(x^2+2-x)
=(x^2+x+2)(x^2-x+2)

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