化简2(4m^2n^2-3n^3)+5(-3m^2n^2+4n^3)
问题描述：
化简2(4m^2n^2-3n^3)+5(-3m^2n^2+4n^3)
答
2(4m^2n^2-3n^3)+5(-3m^2n^2+4n^3)=8m²n²-6n³-15m³n³+20n³=-7m²n²+14n³;很高兴为您解答,skyhunter002为您答疑解惑如果本题有什么不明白可以追问,...