2. x + 5y + 15 z + 35 w + 70t = 0 X + y + z + W + t = 1 X + 2y + 3z + 4w + 5t = 0 2x + 6y + 12z + 20w + 30t = 0 3x + 12y + 30z + 60w + 105 t = 0

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