1/3x²y-3y 分解因式还有 -2a的3次方+12a²-18a -4(x-2y)²+9(x+y)² 2a(x²+1) ²-8ax²
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1/3x²y-3y 分解因式还有 -2a的3次方+12a²-18a -4(x-2y)²+9(x+y)² 2a(x²+1) ²-8ax²
1/3x²y-3y 分解因式
还有 -2a的3次方+12a²-18a -4(x-2y)²+9(x+y)² 2a(x²+1) ²-8ax²
1/3x²y-3y 分解因式还有 -2a的3次方+12a²-18a -4(x-2y)²+9(x+y)² 2a(x²+1) ²-8ax²
1/3x²y-3y
=1/3y(x²-9)
=1/3y(x+3)(x-3)
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