因式分解:(y的平分+2y)的平分+2(y的平分+2y)+1

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因式分解:(y的平分+2y)的平分+2(y的平分+2y)+1
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因式分解:(y的平分+2y)的平分+2(y的平分+2y)+1
因式分解:(y的平分+2y)的平分+2(y的平分+2y)+1

因式分解:(y的平分+2y)的平分+2(y的平分+2y)+1
(y^2+2y)^2+2(y^2+2y)+1
=(y^2+2y+1)^2
=(y+1)^4

:(y²+2y)²+2(y²+2y)+1
=[(y²+2y)+1]²
=(y²+2y+1)²
=(y+1)的4次方