7^2x4 = n^8
7^8 = n^8
n = 7
33.3..........................................
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Answer:

Step-by-step explanation:
From the graph, the x-intercepts are;



These are root of the polynomial function represented by the given graph.
By the remainder theorem;

According to the factor theorem, if
is a factor of
, then 
This implies that;
are factors of the required function.
Hence; 
We expand using difference of two squares to obtain;

We expand using the distributive property to get;

Rewrite in standard form to obtain;
