contestada

Let f and g be two functions defined as
[tex]f(x) = 2x + 5 \\ g(x) = {x}^{2} - 7x + 5[/tex]
a) Find (f×g)(x)
b)Find (f×g)(4)

Respuesta :

[tex]a) \: (f \times g)(x) = (2x + 5)( {x}^{2} - 7x + 5) \\ b) \: (f \times g)(4) = (2 \times 4 + 5)( {4}^{2} - 7 \times 4 + 5) = 13( - 7) = - 91[/tex]

Answer:

negative 91

Step-by-step explanation: