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Serga [27]
2 years ago
5

Need some help again, thank you

Mathematics
1 answer:
mr Goodwill [35]2 years ago
8 0

Answer:  y^2+9y+18

Work Shown:

(5y^2+5y+9) - (4y^2-4y-9)\\\\5y^2+5y+9 - 4y^2+4y+9\\\\(5y^2 - 4y^2)+(5y+4y)+(9+9)\\\\y^2+9y+18\\\\

Side note: The result factors to (y+3)(y+6), but I'll leave it unfactored.

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