help!1*2*3+2*3*4+3*4*5+···+100*101*102

（2）（3）（4） help.help.help. i need ---- them ----- these clothesi need ------ them -------these clothes1 to help to sell 2 help sell 3 to help selling 4 help selling说明理由 He wants me___his brother 答案一helping 2 helps 3 to help 4 help we must help them more than our parents_us(1)gave(2)give(3)helped(4)help大哥们,准确率糕点! it's very kind of you ____ me.1 to help 2 helping 3 help 4 helped his English is very poor.You must _________ him1 try help 2 trying to help 3 try to helps 4 try to help 求不定积分 ∫sin(3x+2)dx?who can help me ...help...help . 只要2、3、4单元的前四课就行，help In the last two years I __him many timeshelped 2 have helped 3help 4will help help!1*2*3+2*3*4+3*4*5+···+100*101*102 2减6分之x+4=3分之2x-1 HELP~ 求过去式：1,smell 2,walk 3,pick 4,happen 5,help 6,learn help me -3/4²=（） (125/27)-2/3的次方help Help!Help!Help!Help!设数列｛an｝和｛bn｝满足：a1=b1=6,a2=b2=4,a3=b3=3且数列｛an-1 -an｝是等差数列（n是正整数）数列｛bn -2)是等比数列（n是正整数）（1）求｛an｝,｛bn｝的通项公式；（2）是否存在 （1）（2）（3）求助,help me! Help!（二、2、4） Help!Help!Help me!已知满足2x-3y=11-4m和3x+2y=21-5m的x,y满足x+3y=20-7m,求m的值.