I - m² + 5 mn from 4 m² - 3 mn +8
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Step-by-step explanation:
ANSWER
4m
2
−3mn+8−(−m
2
+5mn)=4m
2
−3mn+8+m
2
−5mn
=4m
2
+m
2
−3mn−5mn+8
=5m
2
−8mn+8.
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