Question

Dada a função quadratica f (x)=x2-3x+2, determine:
a) 2.f (1)
b) f(1)-f (2)

Answer 1

b) f(1)=(1)2-3(1)+2
x=1-3+2
x=0
f(2)=(2)2-3(2)+2 
x=4-9+2
x=-3
f(0)-(-3)
x=3