Answer:
+infinity, or if there is no such choice, DNE.
Step-by-step explanation:
4x^2 − 3x^2 + x − 3
simplifies to
x^2+x-3
As x-> infinity,
both x^2 and x approach inifinity, therefore
the limit approaches +infinity, or does not exist (DNE)
Generally, it is more indicative to say +infinity or -infinitite, while reserving DNE (does not exist) for incoherent one-sided limits.