(x-y)²+4xy初二因式分解
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(x-y)²+4xy初二因式分解(x-y)²+4xy初二因式分解(x-y)²+4xy初二因式分解(x-y)²+4xy=x²-2xy+y²+4
(x-y)²+4xy初二因式分解
(x-y)²+4xy初二因式分解
(x-y)²+4xy初二因式分解
(x-y)²+4xy
=x²-2xy+y²+4xy
=x²+2xy+y²
=(x+y)²
(x-y)²+4xy=(x+y)*(X+y)
(x-y)²+4xy = x^2 - 2xy + y^2 + 4xy = x^2 +2xy + y^2 =(x+y)^2