Question

Which of the following shows the cube root of 8?
A. -2
B. 2 <---
C. -2 and 2
D. 4

@Dark_Force @yoyo123 @jtryon @jim_thompson5910 @Hero @TacoGod

Answer 1

Yup, 2*2*2 = 8

Answer 2

8*2 doesn't equal 8 o.o

Answer 3

^

Answer 4

But yes... 2 cubed is 8

Answer 5

You are correct.
\[2^3=2\times2\times2=8\]

Answer 6

Cubed is 'to the power of 3'.
Square is 'to the power of 2.'

Answer 7

And a negative won't work because:\[-2^3=-2\times-2\times-2=4\times-2=-8\]

Answer 8

If x^2 = 196, what is the value of x?
A. 4
B. 7
C. 14 <---
D. 392

Answer 9

It's asking to take the cube \(\ \sf root \). If you had a larger number it would be difficult to find your answer, therefore you have to use \(\ \sf \Large \sqrt[3]{8}\) which translates to \(\ \sf \Large 8^\frac{1}{3}\)

Answer 10

You are correct again.
\[14^2=14\times14=196\]

Answer 11

You want to find "x", so you have to get rid of that pesky square, so start by taking the inverse of a square, which is a square root. \(\ \sf \sqrt{196} \) = 14.



What you do to one side you do to the other to keep the equation balanced.