(x+y)^2-10(x+y)^2+25
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(x+y)^2-10(x+y)^2+25(x+y)^2-10(x+y)^2+25(x+y)^2-10(x+y)^2+25(x+y)^2-10(x+y)^2+25=25-9(x+y)^2=(5-3x-3
(x+y)^2-10(x+y)^2+25
(x+y)^2-10(x+y)^2+25
(x+y)^2-10(x+y)^2+25
(x+y)^2-10(x+y)^2+25
=25-9(x+y)^2
=(5-3x-3y)(5+3x+3y)
=(x+y-5)²
(x+y)^2-10(x+y)^2+25
=x ^2+y^2+2xy-10x^2-10y^2-20xy+25
=-9x^2-9y^2-18xy+25
=-(3x+3y)^2+25
=(5-3x-3y)(5+3x+3y)
25(x-y)*2+10(y-x)+125（x-y)^2+10(y-x)+1
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(x-y)^2+10(y-x)+25因式分解 （x-y）²-10（y-x）+25（x-y）²+10（y-x）+25只要结果
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(x+y)^2-10(x+y)^2+25
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25（x+y)^2+10(y-x)+1=?因式分解
25(x-y)^2+10(y-x)+1=
25(X-Y)^2+10(x-y)+1?
计算（x+y）^2+10（y-x）+25
(x－y)^2－10(y－x)+25
（x+y）^2+10（x+y）+25
[(x-y)^2-(x+2y)(x-2y)]/y