Respuesta :

Answer:

a. 19 b. -53

Step-by-step explanation:

I did it mentally, but you plug those x values into the equation.

Medexassemba
A = 22
4(3x)-8-x2 = 4(3x3)-8-3x2= 22
B= -38
4(3x)-8-x2 = 4(3x-3)-8-(-3x2)=-38