Question

(a+b)^3-a-bए प्लस बी का होल क्यूब ​

Answer 1

Answer:

refer to the attachment

Answer 2

$\huge{\underline{\underline{\boxed{\sf{\purple{Answer ࿐}}}}}}$

(a+b)3−a−b

= (a+b)3−(a+b)(a+b)3−a−b

=(a+b)3−(a+b)

 = (a+b)[(a+b)2−1](a+b)[(a+b)2−1]

= (a+b)[(a+b)2−(1)2] = (a+b)[(a+b)2−(1)2]

= (a+b)(a+b+1)(a+b−1)

= (a+b)(a+b+1)(a+b−1)