Answer:
3 - 3n²
Explanation:
(5 - 2n²) - (4n² + 4) + (3n² + 2)
Remove parenthesis, distributing the second one by - 1
= 5 - 2n² - 4n² - 4 + 3n² + 2 ← collect like terms
= (5 - 4 + 2) + (- 2 - 4 + 3)n²
= 3 + (- 3)n²
= 3 - 3n²
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