15. Is the rational algebraic expression
in simplest form?
[tex] \frac{x}{ \times + 1} [/tex]


a. Yes, because the given expression cannot be factored out.
b. Yes, because the numerator has already constant variable 1.
c. No, because the numerator and denominator has a common variable which is x.
d. No, because the variable x can be factored out.​