Help please! Will give medal!
Simplify (5x^3)/(7x^3+x^4)
I know that the answer is 5/x+7
However, my choices are:
5/x+7 where x does not equal 0 or -7
and
5/x+7 where x does not equal 0
and
5/x+7 where x does not equal -7
I don't know how to figure that out

Question

Help please! Will give medal!
Simplify (5x^3)/(7x^3+x^4)
I know that the answer is 5/x+7
However, my choices are:
5/x+7 where x does not equal 0 or -7
and
5/x+7 where x does not equal 0
and 
5/x+7 where x does not equal -7
I don't know how to figure that out

anonymous · Answer

In this case the / is a fraction line if that helps

anonymous · Answer

$$\frac{ 5}{ (7+x) }$$

set denom = 0, solve x

anonymous · Answer

division by 0 i undefined, so whenever the denom = 0 that case will never exist

anonymous · Answer

you need to figure out which x makes that case true

triciaal · Answer

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