Respuesta :

Answer:

- 3 and x² + 2x - 3

Step-by-step explanation:

(a)

To evaluate g(1) substitute x = 1 into g(x)

g(1) = 1² - 4 = 1 - 4 = - 3

(b)

Substitute x = x + 1 into g(x)

g(x + 1) = (x + 1)² - 4 ← expand parenthesis using FOI

            = x² + 2x + 1 - 4 ← collect like terms

           = x² + 2x - 3

HabibaMustafa

Step-by-step explanation:

if g(x) = 2x - 4

we consider g(x) = g(1)

g(1) = (2×1) -4

= 2 - 4

= -2

we consider g(x) = g(x+1)

g(x+1) = 2x(x+1) -4

= (2x² +2x) -4. ÷2

= x² + x -2

=(x+2) (x-1)

= x+2 = 0. = x-1 = 0

= x = 0-2. = x = 0+1

= x = -2. = x = 1

s.s = {-2,1}