Question

1) ( 15 m - n ) ( 125 m² + 15mn + n² ) 2) ( 12 x - 13 y ) ( 14 x² + 16 xy + 19y²)

Answer 1

1) 1/125m^3+1/25m^2n+1/5mn^2-1/25m^2n-1/5mn^2-n^3
1/125m^3-n^3
2) 1/8x^3+1/12x^2y+1/18xy^2-1/12x^2y-1/18xy^2-1/27y^3
1/8x^3-1/27y^3