Mathematics
Senior High
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(2)途中式と一緒に教えてください🙇‍♀️

*(3) (7x-3y) (49x2+21xy+9y2 ) 203 次の式を展開せよ。 (1) (3a+1)³(3a-1)³ (2) (x+2)(x-2)(x+4x2+16) 12

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