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r-ruslan [8.4K]
2 years ago
12

Factor the polynomial x^8-6561

Mathematics
1 answer:
Dafna1 [17]2 years ago
7 0

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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