Factor Fully...Polynomial?
Factor Fully...please show steps if you can so i can learn
a) x^6+1331
b) 343x^15-8
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Factor Fully...please show steps if you can so i can learn
a) x^6+1331
b) 343x^15-8
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Answers & Comments
x^6+1331 = (x^2)^3 + 11^3
= (x^2+ 11)(x^4 - 11x^2 + 121)
USE FORMULA a^3 + b^3 = ( a+b) ( a^2 -ab + b^2)
x^6 = ( x^2) ^3
1331 = (11)^3
answer = ( x^2 +11) ( x^4 - 11x^2 + 121)
2)
343 x^15= ( 7x^5)^3
8 = (2) ^3
use formula a^3 - b^3 = ( a-b) ( a^2 + ab + b^2)
( 7x^5 - 2) ( 49x^10 + 14x^5 + 4) ANSWER