simplify
(1) . x - [y - {z - (b - c)}]
(2). 2x - [3x - {4x- (3y - 2x - 2y)}]
(3). (3x^2 - 4y + 3x) - [x^2 - (x^2 + y) - 2y + 4]
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Answer:
(2). Answer is 5x+y.Sorry I don't know (1) and(2)
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