Simplify 8x^4/x^3+7x^4 and Find the excluded values

So first what we do is we need to get the excluded values. So to get them we have: 8x^4/x^3+7x^4.

Lets factor out the second part. x^3+7x^4 = (x^ (3/4) + 7x)) ^4

So then we get 8x^4 / (x^ (3/4) + 7x) ^4

8x^4 / (x^ (3/4) + 7x) ^4