Answer:
8
Step-by-step explanation:
n+(4n+1)+(4n-2) = 71
n+4n+1+4n-2= 71
9n-1=71
9n= 72
n=8
16p^2 - 9
Use FOIL method of multiplication
|7| - 7 = 0
2|-7| = 14
(-7)^2 = 49
-7-|-7|= -14
-7-1-71= -79
80,10,66
Hope this helps :)
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