We want to for the given expression. To do so, we will first identify
b. In a ,
b is the linear , which is the number that is multiplied by the
x-variable.
x2−5x+c
Now, we will calculate
(2b)2. Since we have that
b=-5, we can calculate the value of
(2b)2 by substituting
-5 for
b.
The value of
c, which is the number that completes the square, is
c=6.25.
x2−5x+6.25