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$1.\right)$ Which of the following expressions is a rational algebraic expression? a. $\dfrac {x^{\dfrac {1} {3}}} {m+n}$ C. $x+y$ $-$ $\dfrac {\sqrt{x} } {3}$ b. $x^{-2}+y$ d. $z$
7th-9th grade
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Qanda teacher - Himanshu
Option C is correct. Explanation - In A and D their are root in expression so we are not sure about that they are rational or irrational and in option B their is inverse power so we are not sure about it too. But in option C it clearly understood that this expression is rational.
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