tris2002 tris2002
  • 24-01-2020
  • Mathematics
contestada

Factor the polynomial x^8-6561

Respuesta :

devishri1977
devishri1977 devishri1977
  • 24-01-2020

Answer:

Step-by-step explanation:

x⁸ - 6561 = x⁸- 3⁸ = (x⁴)² - (3⁴)²

= (x⁴ + 3⁴) (x⁴ - 3⁴)       {a² - b² = (a+b)(a-b); here a =x⁴ and b= 3⁴ }

=  (x⁴ + 3⁴) ( [x²]² - [3²]²)             {here a =x² and b = 3²}

=  (x⁴ + 3⁴) (x² + 3²) (x²- 3²)

= (x⁴ + 81) (x² + 9) (x + 3) (x-3)

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