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Sagot :
Answer:
-m² + 13m + 11
Step-by-step explanation:
To simplify the expression, we must combine the like terms. So
(8m + 5m² + 7) - (6m² - 5m* - 4)
The - means that every term inside of the second () will change signs. So, we have
8m + 5m² + 7 - 6m² + 5m + 4
Now we combine the like terms.
With m²: 5 - 6 = -1
With m: 8 + 5 = 13
Independent: 7 + 4 = 11
The simplified expression is:
-m² + 13m + 11
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