Question

3 t-4m-7m2 And 2l+3m-4n2
from the sum of
9l+2m-3m2 and -3l+m+4n2
-​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Step-by-step explanation:

(9l+2m-3m²-3l+m+4n²)-(3l-4m-7m²+2l+3m-4n²)

6l+3m-3m²+n²-(5l-m-7m²-4n²)

6l+3m-3m²+n²-5l+m+7m²+4n²

l+4m+4m²+5n²