psp怎样从352M334升级到371M33得先生级为3.60在升级为3.71再生3.71-4。2,用简便方法计算122324252629921002用简便方法计算1-22+32-42+52-62+······+992-1002解:原式=(32-22)+(52-42)+........+(992-982)+1-1002=(3-2)×(3+2)+(5-4)×(5+4)+........+(99-98)(99+98)+1-1002=5+9+...+197+1-1002=(197+5)×49÷2+1-100
psp怎样从352M334升级到371M33得先生级为3.60在升级为3.71再生3.71-4。2,用简便方法计算122324252629921002用简便方法计算1-22+32-42+52-62+······+992-1002解:原式=(32-22)+(52-42)+........+(992-982)+1-1002=(3-2)×(3+2)+(5-4)×(5+4)+........+(99-98)(99+98)+1-1002=5+9+...+197+1-1002=(197+5)×49÷2+1-100
psp怎样从352M334升级到371M33得先生级为3.60在升级为3.71再生3.71-4。2,用简便方法计算122324252629921002用简便方法计算1-22+32-42+52-62+······+992-1002解:原式=(32-22)+(52-42)+........+(992-982)+1-1002=(3-2)×(3+2)+(5-4)×(5+4)+........+(99-98)(99+98)+1-1002=5+9+...+197+1-1002=(197+5)×49÷2+1-100
psp怎样从352M334升级到371M33得先生级为3.60在升级为3.71再生3.71-4。2,用简便方法计算122324252629921002用简便方法计算1-22+32-42+52-62+······+992-1002解:原式=(32-22)+(52-42)+........+(992-982)+1-1002=(3-2)×(3+2)+(5-4)×(5+4)+........+(99-98)(99+98)+1-1002=5+9+...+197+1-1002=(197+5)×49÷2+1-100
psp怎样从352M334升级到371M33得先生级为3.60在升级为3.71再生3.71-4。2,用简便方法计算122324252629921002用简便方法计算1-22+32-42+52-62+······+992-1002解:原式=(32-22)+(52-42)+........+(992-982)+1-1002=(3-2)×(3+2)+(5-4)×(5+4)+........+(99-98)(99+98)+1-1002=5+9+...+197+1-1002=(197+5)×49÷2+1-100
psp怎样从352M334升级到371M33得先生级为3.60在升级为3.71再生3.71-4。2,用简便方法计算122324252629921002用简便方法计算1-22+32-42+52-62+······+992-1002解:原式=(32-22)+(52-42)+........+(992-982)+1-1002=(3-2)×(3+2)+(5-4)×(5+4)+........+(99-98)(99+98)+1-1002=5+9+...+197+1-1002=(197+5)×49÷2+1-100
psp怎样从352M334升级到371M33得先生级为3.60在升级为3.71再生3.71-4。2,用简便方法计算122324252629921002用简便方法计算1-22+32-42+52-62+······+992-1002解:原式=(32-22)+(52-42)+........+(992-982)+1-1002=(3-2)×(3+2)+(5-4)×(5+4)+........+(99-98)(99+98)+1-1002=5+9+...+197+1-1002=(197+5)×49÷2+1-100
psp怎样从352M334升级到371M33得先生级为3.60在升级为3.71再生3.71-4。2,用简便方法计算122324252629921002用简便方法计算1-22+32-42+52-62+······+992-1002解:原式=(32-22)+(52-42)+........+(992-982)+1-1002=(3-2)×(3+2)+(5-4)×(5+4)+........+(99-98)(99+98)+1-1002=5+9+...+197+1-1002=(197+5)×49÷2+1-100
psp怎样从352M334升级到371M33得先生级为3.60在升级为3.71再生3.71-4。2,用简便方法计算122324252629921002用简便方法计算1-22+32-42+52-62+······+992-1002解:原式=(32-22)+(52-42)+........+(992-982)+1-1002=(3-2)×(3+2)+(5-4)×(5+4)+........+(99-98)(99+98)+1-1002=5+9+...+197+1-1002=(197+5)×49÷2+1-100
psp怎样从352M334升级到371M33得先生级为3.60在升级为3.71再生3.71-4。2,用简便方法计算122324252629921002用简便方法计算1-22+32-42+52-62+······+992-1002解:原式=(32-22)+(52-42)+........+(992-982)+1-1002=(3-2)×(3+2)+(5-4)×(5+4)+........+(99-98)(99+98)+1-1002=5+9+...+197+1-1002=(197+5)×49÷2+1-100