Factorial
x⁸ - y⁸
= (x⁴)² - (y⁴)²
= (x⁴ + y⁴) (x⁴ - y⁴)
= (x⁴ + y⁴) [ (x²)² -( y²)² ]
= (x⁴ + y⁴) [ (x² +y² ) ( x² - y²) ]
= (x⁴ + y⁴) [ (x² +y² ) ( x+y) ( x-y) ]
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Answers & Comments
Factorial
x⁸ - y⁸
= (x⁴)² - (y⁴)²
= (x⁴ + y⁴) (x⁴ - y⁴)
= (x⁴ + y⁴) [ (x²)² -( y²)² ]
= (x⁴ + y⁴) [ (x² +y² ) ( x² - y²) ]
= (x⁴ + y⁴) [ (x² +y² ) ( x+y) ( x-y) ]