Simplify the following:
(a) 7a2 - 5b2 + 3ab-2-4a2 - 3b2 - 2ab + 4
(b) -7x4 + 15x3 + 4x2 + 2x + 5x4 - 12x3 - 2x? -
(C) 12 + 3y2 - 8y3 - y2 + 7y - 8
(d) m? - 2m + 6m3 + 8 - 10m - m² + 4m
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Answer:
a) 3a2 - 8b2 + ab + 2
b) -2x4 + 3x3 + 4x2
c) 4 + 2y2 -8y3 +7y
d) -7m + 6m3 + 8 - m2
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