propu ation at the end of 2 years
8. Simplify (4m+ 5)2 + ( 5m + 4n) +2mn
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Answer:
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Step-by-step explanation:
⇒(4m+5n)
2
+(5m+4n)
2
⇒(4m+5n)
2
+(5m+4n)
2
⇒16m
2
+25n
2
+40mn+25m
2
+16n
2
+40mn
41m
2
+41n
2
+80mn
⇒40(m
2
+n
2
+2mn)+m
2
+n
2
⇒40(m+n)
2
+m
2
+n
2
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