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  5. 途中式ありで教えて欲しいです🤧🤧
Mathematics
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どこかのJK
どこかのJK

途中式ありで教えて欲しいです🤧🤧

(5) (a-b)(a+b)(a?+6)

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✨ Best Answer ✨

eratos2357
eratos2357

(与式)=(a^2-b^2)(a^2+b^2) (前２つの括弧を計算)
=(A-B)(A+B) (∵a^2=A,b^2=Bとおく)
=A^2-B^2
=a^4-b^4…(答)

どこかのJK
どこかのJK

ありがとうございます！！

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