(x+y)^2-10x-10y+25=(x+y)^-10( )+25
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![(x+y)^2-10x-10y+25=(x+y)^-10( )+25](/uploads/image/z/3798232-16-2.jpg?t=%28x%2By%29%5E2-10x-10y%2B25%3D%28x%2By%29%5E-10%28+%29%2B25)
(x+y)^2-10x-10y+25=(x+y)^-10( )+25
(x+y)^2-10x-10y+25=(x+y)^-10( )+25
(x+y)^2-10x-10y+25=(x+y)^-10( )+25
(x+y)^2-10x-10y+25=(x+y)^2-10( x+y)+25
(x+y)²-10x-10y+25=(x+y)²-10(x+y )+25
(x+y)^2-10x-10y+25=(x+y)^2-10(x+y )+25