plshelpmua plshelpmua
  • 14-08-2019
  • Mathematics
contestada

Find a factorization of 2^6 +1 and 2^12+1 as a sum of two cubes

Respuesta :

Gasaqui
Gasaqui Gasaqui
  • 23-08-2019

Answer:

(4+1)(4^2 - 4*1+1)

(16+1)(16^2-16+1)

Step-by-step explanation:

Sum of cubes is a common case of factorization:

[tex]x^{3}+y^{3}=(x+y)(x^{2} -xy+y^{2} )[/tex]

The first case can be written as: (2^2)^3+1^3= 4^3 + 1^3 which can be factorized as (4+1)(4^2 - 4*1+1)

And we can solve it, and the result is 65.

The second case can be written as (2^4)^3 + 1^3= (16^3 +1^3) which can be factorized as (16+1)(16^2-16+1)=(17)*(241)=4097

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