SOLUTION: Hello, can anyone help me factor these polynomals completely. Much appreciated. Todd 125 - 8x cubed ? 54t cubed + 16v cubed. I believe this one must ne prime

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Hello, can anyone help me factor these polynomals completely. Much appreciated. Todd 125 - 8x cubed ? 54t cubed + 16v cubed. I believe this one must ne prime       Log On


   

Question 116028: Hello,
can anyone help me factor these polynomals completely.
Much appreciated.
Todd
125 - 8x cubed ?
54t cubed + 16v cubed. I believe this one must ne prime
Answer by vertciel(183) About Me  (Show Source):
You can put this solution on YOUR website!
Hi Todd,
Recall that +a%5E3+%96+b%5E3+=+%28a+%96+b%29%28a%5E2+%2B+ab+%2B+b%5E2%29+
1. +125+-+8x%5E3+
= +5%5E3+-+8x%5E3+
= %285+-+8x%29%285%5E2+%2B+40x+%2B+8x%5E2%29+
2. I'll let you try this one. Remember to use the sum of cubes formula!