Пошаговое объяснение:
1) (x-y)(x+y) = x²-y²
2)(3x-y)(3x+y) = 9x²-y²
3)2(x-1) и 4(x-1) => 4(x-1)
4)4(x+y) и 8(x+y) => 8(x+y)
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Пошаговое объяснение:
1) (x-y)(x+y) = x²-y²
2)(3x-y)(3x+y) = 9x²-y²
3)2(x-1) и 4(x-1) => 4(x-1)
4)4(x+y) и 8(x+y) => 8(x+y)