Question

Factorise (a+b) ³-a-b

Answer 1

Sol : ( a + b )³ - a - b

 = ( a + b )³ - ( a + b )

By taking ( a + b ) as common,

 = ( a + b ) { ( a + b )² - 1 }

 = ( a + b ) ( a² + b² + 2 ab - 1 )  [ ( a + b )² = a² + b² + 2 ab ]

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Answer 2

Answer:

(a+b)(a+b+1)(a+b-1)

Step-by-step explanation:

Hope i'll help you.