Question: Perform the indicated operations. (a) 13ab2 - 4a2b - 2ab + 62 + (-ab2 - 5a2b + 8ab + 4) (b) (-6m2n + 3mn2 -

Perform the indicated operations.
(a) 13ab2 - 4a2b - 2ab + 62 + (-ab2 - 5a2b + 8ab + 4)
(b) (-6m2n + 3mn2 - 5mn + 2) + (4m2n + 2mn2 - 6mn - 9)
(c) (2x + 3y + z - 7) + (4x - 2y - z + 8) + (-3x + y - 2z - 4)

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