# Which value of b would make #16x^2 -bx+25# a perfect square trinomial?

##### 1 Answer

Jan 11, 2017

b = 40 and -40

#### Explanation:

General form of Perfect square trinomial is

Therefore from

take consideration a=4x and b=-5 (different sign), then

The perfect square is

if we consider a=4x and b=5 (same sign), then

The perfect square is

The first solution