因式分解:(y+1)²-2x²(y²+1)+x4(的四次方,打不出来)(y-1)²
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因式分解:(y+1)²-2x²(y²+1)+x4(的四次方,打不出来)(y-1)²
因式分解:(y+1)²-2x²(y²+1)+x4(的四次方,打不出来)(y-1)²
因式分解:(y+1)²-2x²(y²+1)+x4(的四次方,打不出来)(y-1)²
若第二个y后面是减号,答案即是下面的:
(y+1)²-2x²(y²-1)+x^4(y-1)²
=((y+1)-(x^2(y-1))^2