化简3n(3n+1)(3n+2)
问题描述:
化简3n(3n+1)(3n+2)
答
=3n(9n²+9n+2)
=27n³+27n²+6n
化简3n(3n+1)(3n+2)
=3n(9n²+9n+2)
=27n³+27n²+6n