Question

1.   f(x)=x+2
     Calculati f(0) + f(-2)
2. Aratati ca √2 +√8 -3√2 = 0
3. f(x)=x-2
 Calculati f(0) +f(2) 

Answer 1

1.f(o)=0+2=2
f(-2)=(-2)+2=0
f(0)+f(-2)=2+0=2
3.F(0)=0-2=-2
f(2)=2-2=0
f(0)+f(2)=(-2)+0=(-2)
Atat stiu!!!