17-05-2020
Mathematics

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How to add or subtract this polynomial

How to add or subtract this polynomial class=

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nicole2023276 nicole2023276

17-05-2020

Answer:

18x^2 + 9x - 5

Step-by-step explanation:

Combine like terms:

(9x^2-8) + (9x^2+9x+3)

= 9x^2 + 9x^2 + 9x - 8 + 3

= 18x^2 + 9x - 5

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