Question

determine o limite da função f (x) = x* -5x + 3, quando x tende a 4.

Answer 1

f (x)=(4)-5(4)+3
f(x)=-21

Answer 2

$\lim_{x \to 4} x^{2} = 4^{2}=16 \\ \\ \lim_{x \to 4} -5x = -5(4)=-20 \\ \\ \lim_{x \to 4} 3 =3 \\ \\ 16-20+3=-1$