Question

Dada a função f(x) =x²-5x+6 calcule
f(1)

Answer 1

f(1)=$1^{2}$-5.1+6
f(1)=1-5+6
f(1)=-4+6
f(1)=2

Answer 2

f(x)=(x-2).(x-3), logo x=2 ou x=3
f(1)=1-5+6=2