how can help me pls I need help

Answer:
[tex]\lim_{x \to 2^-} x^3=2^3=\boxed8\\ \lim_{x \to 2^+} 3x-4=3\cdot 2-4=6-4=\boxed2[/tex]
[tex]\lim_{x \to 2} f(x)[/tex] does not exist
Step-by-step explanation:
Inserting 2 to both formulas, you get different results. In that cases, a limit does not exist