# Chapter 7 - Exponents and Exponential Functions - 7-2 Scientific Notation - Mixed Review - Page 425: 70

$8^2(x-1)^3$

#### Work Step by Step

Exponents signify repeated multiplication. An exponent signifies how many times a number is multiplied by itself. In this expression, $8\times8\times (x-1)\times (x-1)\times (x-1)$, $8$ is multiplied by itself twice, and $x-1$ is multiplied by itself $3$ times. In exponential form, we rewrite this using $8^2(x-1)^3$.

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