За square b - 4a square b; 9a square b (add)
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Answered by
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Answer:
answer is 8 a square b
Step-by-step explanation:
hope this is helpful to you so plz mark this answer as brainanist mark it plz
Answered by
0
Step-by-step explanation:
3a^2 b + 9a^2 b - 4a^2 b = 8 a^2 b
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