因式分解-3a²x²+3a²y²
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因式分解-3a²x²+3a²y²
因式分解-3a²x²+3a²y²
因式分解-3a²x²+3a²y²
-3a²x²+3a²y²
=-3a²(x²-y²)
=-3a²(x-y)(x+y)
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-3a²x²+3a²y²
=3a²(y²-x²)
=3a²(y-x)(y+x)