Find the zeros of the polynomial function.

f(x) = x2 + 12x + 20

A.
2, 10

B.
–4, –5

C.
–2, –10

D.
4, 5

Question

Find the zeros of the polynomial function.
 
 
        f(x) = x2 + 12x + 20
 
 
 A.
2, 10
 
 B.
–4, –5
 
 C.
–2, –10
 
 D.
4, 5

***[isuru]*** · Answer

hey,
 this one is same as before...
       the question is asking u to solve it for  "x" when 
                 0 = x2 + 12x + 20
so...
        factorize it..
           x^2 + 12x +20 =0
           x^2 + 10x +2x +20 = 0
           x(x + 10) +2(x +10) =0
               (x + 2)(x + 10) = 0
 
which means..
      x = -2 or x = -10

did ya get it ?

anonymous · Answer

I kinda get it but polynomial function is very hard for so.....but thanks for helping :D