[-3a^(n+2)b]³[-4ab^(n+3)]²
=-27a^(3n+6)*b³*16a²b^(2n+6)
=-432a^(3n+8)*b^(2n+9)
.
(-2xy²)³*(3x²y²)*18x的四次方y的六次方
=-8x³y^6*54x^6*y^8
=-432x^9*y^14
[-3a^(n+2)b]³[-4ab^(n+3)]²
=-27a^(3n+6)*b³*16a²b^(2n+6)
=-432a^(3n+8)*b^(2n+9)
.
(-2xy²)³*(3x²y²)*18x的四次方y的六次方
=-8x³y^6*54x^6*y^8
=-432x^9*y^14