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18-12-2020
Mathematics

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helpmewithphysics123 helpmewithphysics123

21-12-2020

Answer:

9x² +2x

Step-by-step explanation:

6x² +9x-7x+3x²

combine like terms

6x² +3x² + 9x-7x

9x² + 2x

9x² +2x

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