Question

calcule A) (-xy) . (-xy) . (-xy) B) (-xm) . (x²m) . (3m) ???????

Answer 1

A) (-xy) . (-xy) . (-xy) =
     -x¹⁺¹⁺¹y¹⁺¹⁺¹ =
     -x³y³

B) (-xm) . (x²m) . (3m) =
     -3x¹⁺²m¹⁺¹⁺¹ =
     -3x³m³