Question

Dada a função f(x) = x2 + 4x + 9, calcule: a) f(-1) __________________________________________ b)f( 0) ___________________________________________ c)f( -5)___________________________________________ d)f(2)____________________________________________ e)f(4).

Answer 1

Resposta:

a) f(-1) = 3

b) f(0) = 9

c) f(-5) = -21

d) f(2) = 21

e) f(4) = 33

Explicação passo a passo:

a) f(-1) = (-1 * 2) + (-1 * 4) + 9 = 3

b) f(0) = (0*2) + (0*4) + 9 =9

c) f(-5) = (-5*2) + (-5*4) + 9 = -21

d) f(2) = (2*2) + (2*4) + 9 = 21

e) f(4) = (4*2) + (4*4) + 9 = 33