搜搜做题作业网计算(3m^2)^3-7m^3【m^3-m(4m^2+1)】等于 A.7m^3+9m^4 B.7m^4+48m^6 C.
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计算(3m^2)^3-7m^3【m^3-m(4m^2+1)】等于 A.7m^3+9m^4 B.7m^4+48m^6 C.-7m^2+7m^4+31m^5 D.-7m^3-28m
计算(3m^2)^3-7m^3【m^3-m(4m^2+1)】等于 A.7m^3+9m^4 B.7m^4+48m^6 C.-7m^2+7m^4+31m^5 D.-7m^3-28m^5-7m^6+27m^7 正确率一定要高!
计算(3m^2)^3-7m^3【m^3-m(4m^2+1)】等于 A.7m^3+9m^4 B.7m^4+48m^6 C.-7m^2+7m^4+31m^5 D.-7m^3-28m^5-7m^6+27m^7 正确率一定要高!
答案B
(3m^2)^3-7m^3【m^3-m(4m^2+1)】
=27m^6-7m^3[m^3-4m^3-m]
=27m^6-7m^3[-3m^3-m]
=27m^6+21m^6+7m^4
=48m^6+7m^4
选B
(3m^2)^3-7m^3【m^3-m(4m^2+1)】
=27m^6-7m^3[m^3-4m^3-m]
=27m^6-7m^3[-3m^3-m]
=27m^6+21m^6+7m^4
=48m^6+7m^4
选B
m-2m-3m+4m-5m-6m+7m.2004m=?
m-2m-3m+4m-5m-6m+7m-8m-9m+.+2002m-2003m-2004m
计算:(m+3m+5m+...+2009m)-(2m+4m+6m+...+2010m)
(m+3m5m+7m+.2009m)-(2m+4m+6m.2008m)
已知m＞4,化简|m-4|+|7-2m|+|m×m-2m+1|-|m×m-2m-3|
(m+3m+5m+7m+.+2009m)-(2m-4m-6m-.-2008m)=?
(m+3m+5m+7m+.+2011m)-(2m+4m+6m+.+2010m) 要说理由!
(m+3m+5m+.+2008m)-(2m+4m+6m+.+2009m)
(m+3m+5m+...+2009m)-(2m+4m+6m+...2008m)
(m+3m+5m+...+2013m)-(2m+4m+6m+...+2012m)
(m+3m+5m.+2013m)-(2m+4m+6m+.+2012m)=?
(m+3m+5m+...+2014m)-(2m+4m+6m+...+2013m)