SOLUTION: Which of the following four examples of terms are perfect cubes? Explain your answer to each ( why you put yes or why you put no) 125x^8 1y^12 8c^9 9b^27

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Which of the following four examples of terms are perfect cubes? Explain your answer to each ( why you put yes or why you put no) 125x^8 1y^12 8c^9 9b^27      Log On


   

Question 1133460: Which of the following four examples of terms are perfect cubes? Explain your answer to each ( why you put yes or why you put no)
125x^8
1y^12
8c^9
9b^27
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
Factorize each of them completely if you are not sure, and you can see which is and which is not.


--

9b%5E27
3%5E2%2Ay%5E%283%29y%5E3%2Ay%5E3
not a perfect cube, because part of it is but another part is not.


-

8c%5E9
2%5E%283%29%2Ac%5E3%2Ac%5E3%2Ac%5E3
%282c%5E3%29%5E3
this was a perfect cube.