Question

what is the answer of the question

Answer 1

   a(a+b)^3 - 3a^2b(a+b) and 2) x(x^3-y^3)+3xy(x-y) 
=a(a+b){(a+b)² - 3ab} 
=a(a+b){(a²+2ab+b²) - 3ab} 
=a(a+b){a²+2ab+b² - 3a^2b} 
=a(a+b){a²−ab+b² } 

Answer 2

heya ✋

here's ur answer :-)

touch the attachment above ⤴⤴⤴⬆⬆
_______

#thankyou
-----

Identity used

$(x + y) {}^{3} = x {}^{3} + y {}^{3} + 3xy(x + y) \\ x {}^{3} + y {}^{3} = (x + y)(x {}^{2} - xy + y {}^{2} )$

hope it helps