Question

factorise it... ....
a)x^8-1 ​

Answer 1

$\huge\underline\bold\color{red}\mathfrak{Answer}$

= x^8 - 1^8

= (x⁴)² - (1⁴)²

= (x⁴-1)(x⁴+1)

= (x²)² - (1²)² (x⁴ + 1)

= (x² - 1)(x² + 1)(x⁴ + 1)

= (x - 1)(x + 1)(x² + 1)(x⁴ + 1)

❣️Hope it helps❣️