60÷2·5-14x=3

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60÷2·5-14x=3
(x+2)(x-1)+(x+3)(x+1)=x·x-1 求x (5x-4)(2x+5)(3x-6)(2x-4)=(2x-

是不是(5x-4)/(2x-4)=(2x+5)/(3x-6)-1/2?如果是则两边乘以6(x-2)3(5x-4)=2(2x+5)-3(x-2)15x-12=4x+10-3x+614x=28x=2经检验

x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x

是这样的:x^5+x^4=x^3(x^2+x)=(x^2+x)[(x^3-1)+1]=(x^2+x)(x^3-1)+x^2+x=[x(x+1)(x-1)](x^2+x+1)+x^2+x=(x^3-x)

x(x-14)二0*x平方十|2x十27=0,x平方=x+56,x(5x+4)=5x+4,4x平方-45=3|x,-3x

 再答:对吗?再问:,没过程再问:,没过程再问:,没过程再答:不是有过程了吗?再问:哦谢谢

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

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

x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?

x(1+2+...+9)=x(9-8-7-...-1)x=0记得采纳啊

2x+3x+4x+5x+x+6x+7x=100

2x+3x+4x+5x+x+6x+7x=10028x=100x=100/28x=25/7

5x+2=-8 x=30 3x=5x-14 x

全错5x+2=-85x=-10x=-23x=5x-14-2x=-14x=77-2x=3-4x2X=-4x=-21/2x+1=3-x3/2x=2x=4/3再问:最后一题的2为什么不是-2?再答:3-1=

解方程3x-10/x-3 +4x-5/x-1=6x-17/2x-5 +8x-14/2x-3

首先整理下7X-15/X-4=14X-31/2X-8,31/2X-15/X=7X-4,两边都乘以2X得14X*X-8X-1=0.然后根据公式X=-b正负根号(§)下b方-4ac得解为X1=(4+§30

x·(x-4)·(x+4) - (x+3)·(x^2-6x+9) + 5x^3 y^2÷x^2 y^2 ,其中x=-3.

x=-3x·(x-4)·(x+4)-(x+3)·(x^2-6x+9)+5x^3y^2÷x^2y^2=x(x^2-16)-(x+3)(x-3)^2+5x=x^3-16x-(x^2-9)(x+3)+5x=

4x+5x+14=42-2(x+3)

(4+5)X+14=42-2X-2*39x+14=(42-6)-2x9x+2x=42-6-1411x=22x=2

解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)

x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)x/(x-2)=2x/(x-3)+(1-x)/(x-2)(x-3)x(x-3)/(x-2)(x-3)=2x(x-2)/(x-2)(x-3)

(x^3)^()*x^2=x^14

括号填写=(14-2)÷3=12÷3=4 

当f(x)=ax^3-13x^2+bx-60除以3x^2-14x-5时,余式是7x-35.因式分解f(x)

设:f(x)=ax^3-13x^2+bx-60=(kx+l)*(3x^2-14x-5)+(7x-35)=3kx^3-14kx^2-5kx+3lx^2-14lx-5l+7x-35则:a=3k-13=14

(5x+14)÷(x+2)=?

(5x+14)÷(x+2)==(5x+14)/(x+2)最简形式,不要再算了再问:[(x+2)²+2(x+2)(x-2)-3(x+2)(x-3)]÷(x+2)=?化简再答:[(x+2)&su

3^x=2^x,求x.5^(x-1)·10^3x=8^x求x

3^x=2^x两边除2^x(3/2)^x=1x=05^(x-1)*10^3x=8^x5^(x-1)*(5*2)^3x=5^(x-1)*5^3x*2^3x=(2^3)^x所以5^(x-1)*5^3x=1

x-1=3x+3 x-3=12-4x 6x-14=5x-10 x+1=2-4x

X-1=3X+32X=-4;X=-2x-3=12-4x5X=15;x=36x-14=5x-10x+1=2-4x5x=1;x=0.2

已知x^2-3x=2x+14求(4x^3-6x^2+2x)÷(2x)-(x+1)^2+1的值

x²-3x=2x+14x²-5x=14∴﹙4x³-6x²+2x﹚/2x-﹙x+1﹚²+1=2x²-3x+1-x²-2x-1+1=x

x+2/3x=60 x-3/5x=120 4x+18x=1

 再问:三道方程再问:x-2/5x=1/10再问:2/3+1/3x=2再问:3x-5X1/3=7/12

3x-10/x-3 +4x-5/x-1=6x-17/2x-5 +8x-14/2x-3

原方程可化为3-1/(x-3)+4-1/(x-1)=3-2/(2x-5)+4-2/(2x-3)2/(2x-5)+2/(2x-3)=1/(x-3)+1/(x-1)2/(2x-3)-2/(2x-2)=2/