Mathematics
Senior High
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因数分解を教えてください。

のル-eroctoro
因数分解

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✨ Best Answer ✨

y+z=A とおいてみます。すると、
x²-4Ax+3A²=(x-A)(x-3A)
になるので、Aを元に戻して、
{x-(y+z)}{x-3(y+z)}=(x-y-z)(x-3y-3z)

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