因式分解:(1)y²-8y+16(2)-4-4xy-x²-y²(3)0.5x²+
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因式分解:(1)y²-8y+16(2)-4-4xy-x²-y²(3)0.5x²+2xy+2y²
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(y-4)²
-[(2-√3)y+x][(2+√3y)+x]-4
1/2(x+2y)²
-[(2-√3)y+x][(2+√3y)+x]-4
1/2(x+2y)²
因式分解:(1)y²-8y+16(2)-4-4xy-x²-y²(3)0.5x²+
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