Resposta:
f) 2x³ - 7x² + 4x – 2 + 8 – 3x² = 2x³ - 10x² + 4x +6
g) 4a²b – 3b² - 6b² - 2a²b – 1 =2a²b – 9b²– 1
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= 2x³ - 7x² - 3x² + 4x - 2 + 8
= 2x³ - 10x² + 4x + 6
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4a²b - 3b² - 6b² - 2a²b - 1
= 4a²b - 2a²b - 3b² - 6b² - 1
= 2a²b - 9b² - 1 ok
Resposta:
f) 2x³ - 7x² + 4x – 2 + 8 – 3x² = 2x³ - 10x² + 4x +6
g) 4a²b – 3b² - 6b² - 2a²b – 1 =2a²b – 9b²– 1