[新しいコレクション] 8n-1 148217-8n 128 rey hermawan

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F(x y)=xy-x^2-y^2-2x-2y 4 113778 rey hermawan

This is always true with real numbers, but not always for imaginary numbers We have ( x y) 2 = ( x y) ( x y) = x y x y = x x y y = x 2 × y 2...