33×34+34×35+······37×38如何计算

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33×34+34×35+······37×38如何计算33×34+34×35+······37×38如何计算33×34+34×35+······37×38如何计算33*34+34*35+35*36+3

33×34+34×35+······37×38如何计算
33×34+34×35+······37×38如何计算

33×34+34×35+······37×38如何计算
33*34+34*35+35*36+36*37+37*38
=1122+(34*35+35*36) +(36*37+37*38)
=1122+2*35^2+2*37^2
=1122+2450+2738
=(1122+2738)+2450
=3860+2450
=6310

令x=33则 x*(x+1)+(x+1)(x+2)+……+(x+4)(x+5)=5x^2+(1+1+2+2+3+3+4+4+5)x+1*2+2*3+3*4+4*5=5x^2+25x+40. 之后按计算器吧

33×34+34×35+······37×38如何计算 33*34*35*···········*50的乘积的末尾有几个0 36+35+34-33-32-31+30+29-28-27-26+25+······+6= 1+2+3+4+5+6+7+8+9+1+11+12+13+14+15````````1+2+3+4+5+6+7+8+9+1+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28++29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50·································· excel函数 如果a、b和d是空格,结果为空格求a列加b列的和.A·····B····C····结果18 26 35····38 28····21 96····13 34····93····26····12729····93····84····12267····47····51····1 4,-2,10,-14,34,-62················这些数中第8个数应该是什 北师大版初一上册数学P33、34、35的答案,急,急,急,急········· 1 2 9 10 25 26 ··· 4 3 8 11 24 27 ··· 5 6 7 12 23 26··· 17 1816 15 14 13 22 29···1 2 9 10 25 26 ··· 4 3 8 11 24 27 ··· 5 6 7 12 23 26···16 15 14 13 22 29·· ·17 18 19 20 21 30···36 35 34 33 32 31··· · 35*36+36*37+37*38+······99*100奥数 ··········英语问题33题 ···· · · · ···· 快 6·8·10·12·16·20·22·30·34·36·38·40·44（页） 计算1x2+23+34+45+56+······+99100的结果. ··········