Question

What is the coefficient of the second term of the trinomial? (4a+5)2=16a2+Ba+25 Enter your answer in the box. B =

Answer 1

B=40 i know this is late but i do hope it helps

Answer 2

`B=40`

Explanation:

we know that

`(a+b)^(2)=a^(2)+2ab+b^(2)`

In this problem we have

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

The second term of the trinomial is equal to

`2(4a)(5)=40a`

therefore

`B=40`