Respuesta :

rspill6

Answer: 5a + 5b + 5 - x(a + b)

Step-by-step explanation:

(a + b + 1)2 – (a + b + 1)(x - 2) + (a + b + 1)

2a + 2b + 2 - (ax - 2a + bx -2b -2) + (a + b + 1)

2a + 2b + 2 - ax + 2a - bx +2b +2 + a + b + 1

5a + 5b + 5 - x(a + b)