Chemistry
Senior High
Resolved
この因数分解の1行目が分からないです。解説お願いします。
It
1 x = ( x ³ + 8 y ³) (x³ — y ³)
=(x+2y)(x²-2xy
+4y²)(x−y)(x²
+ xy + y²)
= (x+2y)(x−y)(x² −2xy + 4y²)(x² + xy + y²)
x² +7x²y³-896
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