Phillip R. answered • 09/13/14
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find two factors of 24, one of which is a perfect cube. Do the same for 81
For 24 the factors are 8 and 3, 8 being the perfect cube. For 81, the factors are 27 and 3, 27 being the perfect cube.
The cube root of 8 is 2. The cube root of 27 is 3.
23√24 - 23√81
2 3√8 3√3 - 2 3√27 3√3
2(2) 3√3 - 2(3) 3√3
4 3√3 - 6 3√3
-2 3√3
Mariah G.
09/13/14