### Home > AC > Chapter 10 > Lesson 10.4.2 > Problem10-135

10-135.

Which of the expressions below are equivalent to $16x^8$? Make sure you find all the correct answers!

1. $(16x^4)^2$

• $(16x^4)(16x^4)$

$256x^8$

1. $8x^2·2x^6$

• $16x^8$

1. $(2x^2)^4$

• $(2x^2)(2x^2)(2x^2)(2x^2)$

$16x^8$

1. $(4x^4)^2$

• $(4x^4)(4x^4)$

$16x^8$

1. $(2x^4)^4$

• $(2x^4)(2x^4)(2x^4)(2x^4)$

1. $(\frac{1}{16}x^{−8})^{−1}$

• A negative exponent means that the fraction and the variable must be reciprocated (flipped).