Question

1. - a + {2a - 3b + [4a - 5b - (6b - 7a)]} = 2. 3a2 - 2a + 1 - {3 - 2a + a2 - [3a + a2 - 1 + (3a2 - 2 + a)]} = 3. 2x3 - {3x3 + 5x - (2x3 + x3 - 3x)} - [5x3 - x + (2x - 3x3 + x)] = 4. 5a2b + 7ab2 - 2a2b - 8ab2 - [9ab2 - 6ab2 - (a2b - ab2)] = 5. - { - [3a + 6x - (2m - 5x)] + [-5z - 8m + 6a - (7x + 6m)]} = 6. 5a + 4b + 3a + 2b + a - a - 2b - 3a - 4b - 5a = 7. +10x - 20x + [3x5 - 10x + 3x5] - 6x5 + 20x =

Answer 1

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Noce sorryy!!!!

Answer 2

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