Question

What is the cube root of -729

Answer 1

-9

Explanation:

The problem can be easily solved if you know your cube table. Because by knowing that, you know that 9³ is 729, meaning that -9³ would be -729.

Without knowing your cube tables, you can do -9 x -9 x -9 = -729.

Since -9 x -9 = 81, you can use a calcuator or solve on paper for 81 x -729.

Answer 2

-9

Explanation:

-9 x -9 x -9 = -729

-9 x -9 = 81 x -9 = -729