solve y^3=-22, where y is a real number.

Question

simplify your answer as much as possible. I know that y must be a negative. I was just having trouble finding the cubed root of 22

Answer 1

22 is not a perfect cubic number. This is because there is no integer in which if you raise it to the power of 3, you get 22.  So just find the cube-root of 22 using a calculator.  You get an irrational number.

Answer 2

³√22 ≅ 2.802

 

³√(-22) ≅ -2.802