Question

seja a funcao f (x)=3x-2determine f (2)-3f (-2)

Answer 1

f (x)=3x-2
f (2)=3.2-2 =6-2=4
f (-2)=3. (-2)-2=-6-2=-8
3.f (-2)=3. (-8)=-24
f (2)-3.f (-2)
4-(-24)
4+24=28

Answer 2

f (x)=3x-2
*f (2)=3×2-2
f (2)= 6-2
f (2)=4
*f (-2)=3×(-2)-2
f (-2)=-6-2
f (-2)=-8
*f (2)-3f (-2)
4-3×(-8)
4-(-24)
4+24
28