Question

Legea de compozitie x*y=2xy-2x-2y+3 Arătați ca x*y=2(x-1)(y-1)+1​

Answer 1

x * y = 2xy - 2x - 2y + 3

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Arătați că x * y = 2 · (x - 1) · (y - 1) + 1

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x * y = 2xy - 2x - 2y + 3

x * y = 2x · (y - 1) - 2 · (y - 1) + 1

x * y = (2x - 2) · (y - 1) + 1

x * y = 2 · (x - 1) · (y - 1) + 1

@robertinnifd