Posted by AMY on Friday, January 14, 2011 at 8:43am.
I need to factor = 16s^62f^6
My answer is 2(s8)

PLEASE HELP/FACTORING POLYNOMIALS  Reiny, Friday, January 14, 2011 at 8:53am
what happened to the f^6 ?
(If you expanded your answer would you get the original ?)
16s^62f^6
= 2(8s^6  f^6)
now 8s^6 = (2s^2)^3 and f^6 = (f^2)^3 so
knowing that A^3  B^3 = (AB)(a^2 + AB + b^2)
2(8s^6  f^6)
= 2(2s^2  f^2)(4s^4 + 2s^2f^2 + f^4)

PLEASE HELP/FACTORING POLYNOMIALS  drwls, Friday, January 14, 2011 at 8:57am
How can 2s  16 be the same as 16s^62f^6 ? Those functions are totally different. One is sixth order in s and is linear in s. One has f as a variable and the other does not.
16s^6 2f^6 = 2(8s^6  f^6)
= 2*(sqrt8 s^3 f^3)(sqrt8 s^3+ f^3)
Further factoring of the cubic terms is possible. Look up how to factor a^3  b^3 and a^3 + b^3.

PLEASE HELP/FACTORING POLYNOMIALS  AMY, Friday, January 14, 2011 at 9:51pm
thank u
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