Identify the lead coefficient, the middle term and the constant in the trinomial: 
A. leading coefficient 
; middle term 
; constant 
B. leading coefficient 
; middle term 
; constant 
C. leading coefficient 
; middle term 
; constant 
D. leading coefficient 
; middle term 
; constant 
E. none of these
Answer: C
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, 
, 
, . . .
A. an = 
B. an = 
C. an = 
D. an = 
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