Question

1.m³+n³ =   2. x9-y6   3.a6-8  4.b9+27 

Answer 1

1.m³+n³ =(m+n)(m^2-mn+n^2)   
2. x9-y6=(x^3-y^2)*(x^6+x^3y^2+y^4)   
3.a6-8=a^6-2^3=(a^2-2)(a^4+2a^2+4)  
4.b9+27 =b^3+3^3=(b+3)(b^2-3b+9)