Take m2 + m + 4 from - m2 +3m + 6 and
the result from m2 + m + 1.
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Answer:
- m
2
+3m+6+m
2
+m+4−−−
3m
2
−m−1
+m
2
+m+1−2m
2
+2m+2+−−
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