If you're familiar with the idea of a square root, we're about to take things one step (dimension?) further with the cube root. This generally refers to finding a number that ,when cubed, is equal to the number that you're trying to find the cube root of!
1857_Cube_root_of_a_non_perfect_cube.html
1859_Worked_example_Cube_root_of_a_negative_number.html
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