3x 8 3≥5x-1 2-搜答案-拍题作业网

7x＜6x-3x7(5x+4)/4≤(9x-1)/45x+4≤9x-15≤4xx≥5/43(6x+7)≥8-2（5x-9)18x+21≥8-10x+1828x≥5x≥5/28有不明白的可以追问!如果您

1――5,8,17,24,37,（48）5=2^2+18=3^2-117=4^2+124=5^2-137=6^2+1()=7^2-1=482――5884x84-5885x83=（5801）5884*8

1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550120x=550x=55/12=4.583

首先将其全部化为分母分2和3的分数形式：（话说34/3x83/2x2的最后乘以2是直接在整体基础上乘的吧?）解答如下：原式=93/3X83/2-68/3x83/2-19/2x34/3=（93X83）/

5x−2＞3(x+1) ①12x−1≥7−32x ②，由①得：x＞52，由②得：x≥4，∴不等式组的解集是x≥4．

你要求什么结果?A=｛x｜x²-5x-6≤0｝则A=｛x｜-1≤x≤6｝-----------------------------------------B=｛x｜(x+2)/(3-x)≥0

乱了吧,这是几个不等式组?再问：四个，前面我标了个小1234再答：1.2

1.4(x+5)(x+6)(x+10)(x+12)－3x^2=4*[(x+5)(x+12)][(x+6)(x+10)]-3x^2=4*(x^2+60+17x)(x^2+60+16x)-3x^2=4*[

2x/3-3x-1/2≥5/12

-11/12≥7/3x-11/28≥x

x^3×x^5×x+(x^3)^12+4(x^6)^2=x^(3+5+1)+x^(3×12)+4x^(6×2)=x^8+x^36+4x^12

5x-6≥2x+65x-2x≥6+63x≥12x≥43x-12＞4x-124x-3x

(1)x

(x-2)(x-3)+2(x-5)(x+6)-3(x^2-7x+12)=x^2-5x+6+2x^2+2x-60-3x^2+21x-36=18x-90=18*(-5/2)-90=-45-90=-135

原式化简：{（x-3)(x-2)/(x-3)(x-4)}²÷{(x+1)(x+2)/(x-4)(x+2)}²{(x-2)/(x-4)}²÷{(x+1)/(x-4)}

[(x^2+x-12)/(2-x-x^2)]^2*[(x^2-3x+2)/(x^2+5x+4)]^2/[(x^2-5x+6)/(x^2+3x+2)]^2=[(x-3)(x+4)/-(x-2)(x+1)

9x-12x+5x=-3x+5x=2x3x-5x-2+5x+8=-2x+5x-2+8=3x+63x+5+2x+3-7-11x=3x+2x-11x+5+3-7=5x-11x+8-7=-6x+1

f(5)=f[f(5+5)]=f[f(10)]f(10)=10-3=7,所以：f(5)=f[f(10)]=f(7)=f[f(7+5)]=f[f(12)]f(12)=12-3=9所以：f(5)=f[f(

x^9+x^36+4x^12

3≤|8-x|平方得：x^2-16x+55≥0(x-5)(x-11)≥0x≥11,x≤5|x+1|>2-x分类当x>-1时,x+1>2-x,x>1/2当x1/2|x+3|

解下列不等式组(1)6x+2＜4x.(1)(2x-1)/5＜(x+1)/2.(2)由(1)得2x