Add 6x³+8+7x-8x²,3x²-9-8x,3x-x²+2x³
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Answer:
8x³ - 6x² + 2x - 1
Step-by-step explanation:
6x³ + 2x³- 8x² - x² + 3x² + 7x - 8x + 3x + 8 - 9
= 8x³ - 6x² + 2x - 1
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