(2/3)2002方*(1.5)2003方/(-1)2004方2002 (2/3)
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(2/3)2002方*(1.5)2003方/(-1)2004方2002(2/3)(2/3)2002方*(1.5)2003方/(-1)2004方2002(2/3)(2/3)2002方*(1.5)2003
(2/3)2002方*(1.5)2003方/(-1)2004方2002 (2/3)
(2/3)2002方*(1.5)2003方/(-1)2004方
2002
(2/3)
(2/3)2002方*(1.5)2003方/(-1)2004方2002 (2/3)
(2/3)2002方*(1.5)2003方/(-1)2004方
=(2/3)2002方*(3/2)2003方/(1)2004方
=(2/3)2002方*(3/2)2002方*(3/2)/1
=[(2/3)*(3/2)]2002方*(3/2)
=(1)2002方*(3/2)
=1*(3/2)
=1.5
(2/3)2002方*(1.5)2003方/(-1)2004方2002 (2/3)
(1方+3方+5方+...+99方)-(2 方+4方 +6方+...100方)
数列求和(2方-1方)+(3方-2方)+(4方-3方)+.+{(n+1)方-n方}
化简(2x方-2x方)-3(x方y方+x方)+3(x方y方+y方)
[(0.125)2/3方+5的负2方-(2的1.5方)负4/3方]1/2方
1方+2方+3方+4方+.+n方
观察下列式子:3方+4方=5方 8方+6方=10方 15方+8方=17方 24方+10方=26方…请证明规律!证明!规律:(n方-1)方+(2n)方=(n方+1)方.
因式分解:3A方(2A+B)方-27A方B方
2007方-2006方+2005方-2004方+...+3方-2方+1方
1方+2方+3方++++咋算?
A=(b方+c方-a方)/(2bc);B=(a方+c方-b方)/2ac;C=(a方+b方-c方)/2ab ,当A +B+C=1时,证明:A的2002次方+B2002次方+C的2002次方=3
a4方-a2方+(-a2方)3方
1方+2方+3方.+50方等于几?
1方+2方+3方+4方+.+n方化简
计算:1方-2方+3方-4方+5方-6方+…+49方-50方
(2方+4方+6方+……+100方)-(1方+3方+5方+……+99方)
(1方-2方/1+2)+(2方-3方/2+3)+……+(99方-100方/99+100)要过程,
3(x方+6x+1)方+5(x方+6x+1)(x方+1)+2(x方+1)方