Factorise : x(a−3)+y(3−a)
x(a−3)+y(3−a)=x(a−3)−y(a−3)=(a−3)(x−y) Ans.
Factorise: 8(x+y)3−27(x−y)3
Factorise (x−y)3+(y−z)3+(z−x)3 [3 MARKS]