Respuesta :

ghanami
hello :
x²-x-2 = (x+1)(x-2)
x²-x-2 = 0 :  x+1 =0  or x-2 = 0
x= -1 or x= 2 are the zero of f(x)

Answer:

Step-by-step explanation:

for zero we need to solve the equation f(x)=0

so we get

[tex]x^2-x-2=0[/tex]

In the next step we need to factor this quadratic

(x-2)(x+1)=0

using the zero product rule we get

x-2=0 and x+1=0

x=2 and x=-1

so the solution is x= {-1,2}