Mathematics
Senior High
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9x² - y² + 4y - 4
はどう因数分解しますか

Answers

✨ Best Answer ✨

参考・概略です

 9x²-y²+4y-4

={9x²}-{y²-4y+4}

=(3x)²-(y-2)²

={(3x)+(y-2)}{(3x)-(y-2)}

=(3x+y-2)(3x-y+2)

とってもありがとうございます

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