Mathematics
Senior High

4も6も式の形は違うのに、同じa^4-b^4という答えになるのはなぜですか?解説お願い致します🙇🏻‍♀️

(4) (a - b)(a³ +a2b+ab² +63 (6) (a+b)(a³-a2b+ ab² - b³) 63)

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