Mathematics
Junior High
Solved

因数分解の単元です。この問題の仕組みが理解出来てないので誰か説明お願いします。

(9) (3x − 1)² - (2x - 5)² A = (3x - 1) B = (2x-5) xa< A²-B² = (A + B) (A-B) 1 = (3x - 1 + 2x - 5)(3x-1-2x+5 = (5xx-6)(x+4
因数分解

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