通分题100个

蓝疮芬4374五道通分数应用题,有答案 -
晏紫鱼15646667290 ______ [除号用#代替 乘号用X代替1:体育用品有90个乒乓球,如果每两个装一盒,能正好装完吗?如果每五个装一盒,能正好装完吗?为什么? 90#2=45盒 90#5=18盒 答:如果每两个装一盒,能正好装完如果每五个装一盒,也能正好装完.因为90能...

蓝疮芬4374x - y/2x+2y与xy/(x+y)^2 初二通分题 两道 100财富x - y/2x+2y与xy/(x+y)^2 2mn/4m^2 - 9与2m - 3/2m+3 -
晏紫鱼15646667290 ______[答案] x-y/2x+2y与xy/(x+y)^22x+2y与(x+y)^2的最小公倍数是2(x+y)^2x-y/2x+2y=x-y/2(x+y)=(x-y)(x+y)/2(x+y)^2=x^2-y^2/2(x+y)^2xy/(x+y)^2=2xy/2(x+y)^22.2mn/4m^2-9与2m-3/2m+34m^2-9=(2m)^2-3^2=(2m+3)(2m-3)与2m+3的...

蓝疮芬4374有没有大于5分之4而小于6分之5的分数?至少写3个.小学通分题 -
晏紫鱼15646667290 ______ 4/5=24/30=96/1205/6=25/30=100/120所以,这3个分数可以是:97/120、98/120=49/60和99/120=33/40

蓝疮芬4374高数通分题 -
晏紫鱼15646667290 ______ 由立方差公式有:x³-8=x³-2³=(x-2)(x²+2x+4),利用这个来通分啊!!!

蓝疮芬4374x - y/2x+2y与xy/(x+y)^2 初二通分题 两道 100财富 -
晏紫鱼15646667290 ______ 1. x-y/2x+2y与xy/(x+y)^22x+2y与(x+y)^2的最小公倍数是2(x+y)^2 x-y/2x+2y=x-y/2(x+y)=(x-y)(x+y)/2(x+y)^2=x^2-y^2/2(x+y)^2 xy/(x+y)^2=2xy/2(x+y)^22.2mn/4m^2-9与2m-3/2m+34m^2-9=(2m)^2-3^2=(2m+3)(2m-3)与2m+3的最小公倍数是4m^2-92mn/4m^2-92m-3/2m+3=(2m-3)^2/(2m+3)(2m-3)=(2m-3)^2/4m^2-9

蓝疮芬4374五年级通分数题目 -
晏紫鱼15646667290 ______ 7和10的公倍数,有70、140、210…… 因是100多个,所以是140个.

蓝疮芬4374数学分式通分题一道 -
晏紫鱼15646667290 ______ C是不对的,等式右边分子和分母同时除以1-x ,右边分母为(1+x)(1-x)=1-x的二次方,而左边分母是x的二次方-1,因此两者之间是不等的

蓝疮芬4374初二下通分题. -
晏紫鱼15646667290 ______ 【1】3/4x^2y^3z=9y/12x^2y^4z5/6xy^4=10xz/12x^2y^4z【2】x-y=(x+y)(x-y)/(x+y)x-y/x+y=(x-y)(x-y)/(x+y)【3】x-1/x^2+2x+1=(x-1)(x-1)/(x+1)(x+1)(x-1)2/x^2-1=2(x+1)/(x+1)(x+1)(x-1)【4】x+4/x^2-8x+15=(x+4)(x+4)/(x-3)(x+4)(x-5)x+5/x^2+x-12=(x+5)(x+4)/(x-3)(x+4)(x-5)x-3/x^2-x-20.=(x-3)(x-3)/(x-3)(x+4)(x-5)喂,给个悬赏啊

蓝疮芬4374跪求通分 约分题~~~ -
晏紫鱼15646667290 ______ 约分:一共要游100m,小明已经游了75m.他已经游了4分之3,100分之75和4分之 3是一回事吗?通分一种地砖长3dm,宽2dm,如果用这种墙砖铺一个正方形(用的墙砖都是整块)正方形的边长可以是多少分米?最小是多少分米?

蓝疮芬4374通分题+文字题,快点,马上加分 -
晏紫鱼15646667290 ______ 8/3m^2n=32/12m^2n^25/12m^2n^2 6b/a(a-b)=6ab(a+b)/[a^2(a+b)(a-b)]b/a^2(a+b)=b(a-b)/[a^2(a+b)(a-b)]9/a^2-b^2=9a^2/[a^2(a+b)(a-b)]x/x^2-4=x(x+2)/[(x+2)^2(x-2)]x-1/(x+2)^2=(x-1)(x-2)/[(x+2)^2(x-2)] 7/a-b=-7(b+a)/(b^2-a^2)a/a+b=a(b-a)/(b^2-a^2)...