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04-01-2021
Mathematics

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please help me on this , tyyy :]

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sqdancefan sqdancefan

04-01-2021

9514 1404 393

Answer:

(a) 1, 2

(b) 4

Step-by-step explanation:

(a) 9x +81 = 9·x +9·9 = 9(x +9) . . . . . . matches first and second choices

__

(b) 10 +14y -5 -y = (14y -y) +(10 -5) = 13y +5 . . . . . . matches fourth choice only

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