यदि A = 4x2 + 3x - 2, B = -2x2 - x + 5, C = 3x2 - 4x + 1, तथा D = -x2 + 2x - 3 है, तो (A - B + C - D) में x2 तथा x के गुणांकों का योग कितना होगा?

1
8
2
-2
3
4
4
0

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