A + B + C = 0 and the distance between B and - 1 is equal to the distance between C and - 1, find the square of a + 2b-c - (a-4c-b)

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• 2. If ABCD is a four digit number and ABCD + A + 2B + 3C + 4D = 2011, what is ABCD?
• 3. 5. If a, B, C, D are all integers, and the equation (a-2b) x = 1, (b-3c) y = 1, (c-4d) z = 1, W + 100 = D has positive integer solutions x, y, Z, w respectively, then the minimum value of a is___
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