Question

What is the coeffecient of the second term of the trinomial?

(4a+5)^2 = 16a^2+Ba+25
B=____

Answer 1

B=40

Explanation:

(4a+5)^2

(4a+5)(4a+5)

(4a)(4a)+(4a)(5)+(5)(4a)+(5)(5)

16a^2+20a+20a+25

16a^2+40a+25

So the coefficient of the second term of the trinomial is 40.