Answer:
(a^2)x . . . . . or x·x^(2/b)
Step-by-step explanation:
In the expression ...
[tex]a^{b+2}=a^{b}\cdot a^{2}[/tex]
making the substitution
[tex]a^{b}=x[/tex]
we get ...
[tex]a^{b+2}=a^{b}\cdot a^{2}=x\cdot a^{2}[/tex]
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If you want it in terms of b instead of a, then ...
[tex]a=x^{\frac{1}{b}} \qquad\text{so ...}\\\\x\cdot a^{2}=x\cdot x^{\frac{2}{b}}[/tex]
