Let f be the function given by f(x)= (x-1)(x^2-4)/x^2-a. for what positive values of a is f continuous for all real numbers x?

1. what are the missing reasons in the proof 2. it's in the second picture and 3

Use the expression below.–4b + 8c + 12 – 8b – 2c + 6part asimplify the expression. enter your answers in the boxes. b + c + part bfactor the simplified expression using the gcf. a. 2(–2b + c + 3) b. 3(–2b + c + 3) c. 4(–2b + c + 3) d. 6(–2b + c + 3)part cwhat is the value of the expression when b = 2 and c = –3? enter your answer in the box.

Factor the expression using gcf 9b+45