Question

Si f(2x+1) = x^2 – 7x + 6, entonces f(3) =

Answer 1

F(2x+1)=
F(3)= (2(3)+1)
= 6+1
= 7

F(3)= x^2-7x+6
= (3)^2-7(3)+6
= 9-21+6
= -6