Question 1181071
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<pre>

At x = c, the right side is zero.


Hence, left side must be zero at x= c:


    {{{3c^5 + 96}}}= 0,


which implies  {{{c^5}}} = {{{-96/3}}} = {{{-32}}};  hence,  c = -2.    <U>ANSWER</U>
</pre>

Solved, answered and carefully explained.