Question

ajuda por favor?????????????????????????????????????????

Answer 1

f(x)=3x²-x+4
a)
f(1)=3*1²-1+4
f(1)=3*1-1+4
f(1)=3-1+4
f(1)=6

b)
f(-1)=3*(-1)²-(-1)+4
f(-1)=3*1+1+4
f(-1)=3+1+4
f(-1)=8

c)
f(0)=3*0²-0+4
f(0)=4

d)
f(1/2)=3*(1/2)²-1/2+4
f(1/2)=3*1/4-1/2+4
f(1/2)=3/4-1/2+4
f(1/2)=1/4+4
f(1/2)=17/4

e)
f(sqrt(2))=3*(sqrt(2))²-sqrt(2)+4
f(sqrt(2))=6-sqrt(2)+4
f(sqrt(2))=10-sqrt(2)