(3m+2)(3m-2)-5m(m-1)-(2m-1)的平方,其中m=-3分之2 =9m²-4-5m²+5m-4m²-1+4m =9m-5 =9×(-2/3)-5 =-6-5 =-11; 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,
