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Simplify. Assume all variables are positive. $\newline$ $z^{\frac{8}{7}} \cdot z^{\frac{2}{7}}$ $\newline$ Write your answer in the form $A$ or $\frac{A}{B}$ , where $A$ and $B$ are constants or variable expressions that have no variables in common. All exponents in your answer should be positive. $\newline$ ______

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Simplify expressions involving rational exponents

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Q. Simplify. Assume all variables are positive.

\newline

z^{\frac{8}{7}} \cdot z^{\frac{2}{7}}

\newline

Write your answer in the form

A

or

\frac{A}{B}

, where

A

and

B

are constants or variable expressions that have no variables in common. All exponents in your answer should be positive.

\newline

______

Identify and Apply Property: Identify the equation and apply the property of exponents for multiplication. $\newline$ When multiplying powers with the same base, we add the exponents: $a^m \times a^n = a^{m+n}$ . $\newline$ $z^{\frac{8}{7}} \times z^{\frac{2}{7}} = z^{\frac{8}{7} + \frac{2}{7}}$ .
Add Exponents: Add the exponents. $\newline$ $\frac{8}{7} + \frac{2}{7} = \frac{(8 + 2)}{7} = \frac{10}{7}$ . $\newline$ So, $z^{\frac{8}{7}} \times z^{\frac{2}{7}} = z^{\frac{10}{7}}$ .
Write Final Answer: Write the final answer in the form $A$ or $\frac{A}{B}$ , where $A$ and $B$ are constants or variable expressions that have no variables in common, and all exponents are positive. $\newline$ The final answer is $z^{\frac{10}{7}}$ , which is already in the correct form.

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