Hey there :)
[tex] \frac{5}{6x^4} [/tex]
When you take x⁴ from the denominator to the numerator, you get x⁻⁴
Therefore, first option: [tex] \frac{5x^-^4}{6} [/tex] is one correct expression
When you exchange the numerator and denominator, you will have negative powers on them. Such as when you take 6 to the numerator you will have 6⁻¹ and 5 to the denominator is 5⁻¹
So, second option : [tex] \frac{6^-^1x^-^4}{5^-^1} [/tex] is another right expression.
