Question

dada a função f(x)= x elevado a 2+2x-8 determine f(1) f(3) f(-1) f(0) e f(2)

Answer 1

(fx)= x elevado a 2+2x-8 determine

f(1) =x^2+2x-8

1^2+2.1-8

1+2-8

-5

f(3)=x^2+2x-8

3^2+2.3-8

9+6-8

6

f(-1) =x^2+2x-8

-1^2+2.-1-8

1-2-8

-9

f(0) =x^2+2x-8

0^2+2.0-8

0+0-8

-8

f(2)=x^2+2x-8

2^2+2.2-8

4+4-8

0