分解因式:-12x^4y+8x²y²-4x²y³
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分解因式:-12x^4y+8x²y²-4x²y³
分解因式:-12x^4y+8x²y²-4x²y³
分解因式:-12x^4y+8x²y²-4x²y³
分解因式:
-12x^4y+8x²y²-4x²y³
=-4x^2y*(3x^2-2y+y^2)
-12x^4y+8x²y²-4x²y³
==4x²y(3x²-2y+y²)