ANSWER
b=11
EXPLANATION
The given quadratic equation is

We expand to get:

We simplify further by combining the x terms.

This is the standard form.
Comparing to

We have b=11
Answer:
x = 675
Step-by-step explanation:
Collect terms and solve the resulting 2-step linear equation.
(x-355)+(x)+(80+2x)=2425 . . . . . given
4x -275 = 2425 . . . simplify
4x = 2700 . . . . . . . add 275
x = 675 . . . . . . . . . divide by 4