Question

Pleaseee help I keep getting undefined ​

Answer 1

Answer:

4 (Answer B)

Step-by-step explanation:

Note that we can rewrite the given expression as

{ ∛(-8)}²             In words:  the square of the cube root of -8

This simplifies to (-2)²  which in turn is 4 (Answer B)

Answer 2

Answer:

Second option "B. 4" is the correct choice.

Step-by-step explanation:

$(-8)^{\frac{2}{3}}\\\\\mathrm{Apply\:exponent\:rule}:\quad \left(-a\right)^{\frac{m}{n}}=\left(-1\right)^{\frac{m}{n}}\left(a\right)^{\frac{m}{n}}\\\\=\left(-1\right)^{\frac{2}{3}}\cdot \:8^{\frac{2}{3}}\\\\=1\cdot \:8^{\frac{2}{3}}\\\\=8^{\frac{2}{3}}\\\\=\left(2^3\right)^{\frac{2}{3}}=2^{3\cdot \frac{2}{3}}=2^2\\\\=4$

Best Regards!