What is the coefficient of the second term of the trinomial?
(4a+5)2=16a2+Ba+25
To find the coefficient of the second term in the trinomial, we need to expand (4a+5)^2 using the FOIL method.
(4a+5)^2 = (4a+5)(4a+5) = 16a^2+20a+20a+25 = 16a^2+40a+25.
Therefore, the coefficient of the second term in the trinomial is 40.