How to evaluate x?

Question

Evaluate the limit. If the limit does not exist, enter DNE.
#lim_(x→−4)quad x+4x^3+64#

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Answer 1 · 2018-03-17T05:10:03

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#\lim _{x\to -4}(x+4x^3+64)=-196#
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# #
#\lim _{x\to -4}(x+4x^3+64)#

Plug in the value #x=-4#

#=-4+4(-4)^3+64#

Simplify:

#=-196#

# #

That's it!