Answer:
Step-by-step explanation:
3x² - 11x + 12 + 18x² + 20x - 100
3x² + 18x² + 20x - 11x - 100 + 12
21x² + 9x - 88
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Answer:
21x² + 9x - 88
Step-by-step explanation:
3x² - 11x + 12 + 18x² + 20x - 100
3x² + 18x² + 20x - 11x - 100 + 12
21x² + 9x - 88