2x=3.6

x-o.8x=612x-8x=4.83x-8=167.5x-2xx-0.7x=3.6求答案x-o.8x=6X=3012x-8x=4.8X=1.23x-8=16X=8x-0.7x=3.6X=127.5x-2x这题没有=

3.6[x+2]=7.2x-3.63.6[x+2]=7.2x-3.6X+2=2X-1X=33.6x2+3.6=(7.2-3.6)x;10.8=3.6x;x=3.3.6[x+2]=7.2x-3.63.6x+7.2=7.2x-3.610.8=3

f(x)=x^2+x(x你的条件好像不全吧,请你把题完整的给出来.后面的f(-x)有没有另加条件,比如x>0这个条件?

X+2X+6X=3.6怎么解方程合并同类项,得（1+2+6）X=3.6化简单项式,得X=3.6/9解得X=0.4.6x=3.6x=0.43.6=23/5x+2x+6x=9x=23/5x=23/4549x=3.6x=0.4x＋2x＋6x=3.

5x-1/2x=3.65x-1/2x=3.6→（5-1/2）x=3.6→4.5x=3.6→x=3.6/4.5=4/5=0.8下回写这样的式子的时候最好带上括号,因为1/2x不清楚是(1/2)x还是1/(2x),很容易搞错,我是按前者算的,请

26.4+3.6+2x=6x26.4+3.6+2x=6x30=6x-2x4x=30x=7.5

4.8x^2-3.6=12x4.8x^2-3.6=12x4.8x^2-12x-3.6=0x^2-2.5x-0.75=0(x-5/4)^2=34/16x-5/4=正负(根34/4)所以x1:(根34+5)/4x2:(5-根34)/4

解方程3.6x+5.4x=18.36(x+8)/2=903.6x+5.4x=18.36(x+8)除以2=902.04;172

四道方程：2x+6=5x6x-28=2x8(x-3.6)=0.8x15x-110+7x=1102x+6=5x5x-2x=63x=6x=26x-28=2x6x-2x=284x=28x=78(x-3.6)=0.8x8x-0.8x=28.87.2

5x-4x=2*1.8,5x-2+3x=3.6,x+4x=20.3,8x+10-3x=30,10.5-0.5x+0.5=1,x+2x+5x=10,解方程,5x-4x=2*1.8,5x-2+3x=3.6,x+4x=20.3,8x+10-3x=

4.2-0.6x=3.6x5x+2x=33.67x-4x=0.752x+7x+2.1=1256x-32x-119=361x+5=2x3x+9=6x4x-28=2x2x+18=7x5x=25*4-15x7x-x+2*3=29.4(28.8+5

1)7.6X-3.6X(6X-5)=4,求X2)5X-2X(X-4)=11,求X17.6x-3.6x(6x-5)=4；分解等式：4x+3.6x-3.6x(6x-5)=4,进一步得：4(x-1)+3.6x(1-6x+5)=0,再合并得：4（x

x-x÷5＝244x-13＝96-x+1312x＝10(x+20)3.6x÷2=7.2×2x-x÷5＝244x-13＝96-x+1312x＝10(x+20)3.6x÷2=7.2×2x÷3-x÷4＝5这些题方程怎么解,X-1/5X=244=>

x^2=xX=1或0x=0或x=11或0

x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,x/(x-2)+(x-9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6)x/(x-2)-(x-8)/(x-6)=(x+1)/(x-1)-(x-9)/(x-7)(x^2

x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,x=4..思路..将第二项移到右边..第三项移到左边..两边分别进行通分化简..做到这步乃就明白了..千万不要两边同时进行化简..很麻烦的..

(X-1)(X-2)=X*X-3X+2X*X-3X+2=(X-1)(X-3)X*X+4X+4=X(X-4)+4X*X+Y*Y=(X+Y)(X-Y)哪一个因式分解是正确的第一个正确.其余正确形式是：X*X-4X+3=(X-1)(X-3)X*X

x/x平方-x+2=2x/x+1x/x(x-1)+2=2x/(x+1)1/(x-1)+2=2x/(x+1)x+1+2(x-1)(x+1)=2x(x-1)x+1+2x²-2-2x²-2x=0-x-1=0-x=1x=-1x/

已知关于x的二次多项式：a(X*X*X-X*X+3X)+b(2X*X+X)+X*X*X-5当X=2时值为－17,求当X=-2时该多项式的值.a（x^3-x^2+3x)+b(2x^2+x)+x^3-5为关于x的二次多项式,所以三次项系数为零则

f(x)=x|x|+2x(x如下图f(x)=x|x|+2x(xy=-x^2+2x→y∈(-∞,0)-x^2+2x-y=0x^2-2x+1=1-y(x-1)^2=1-yx-1=-√[1-y]x=1--√[1-y]所以反函数为y=1-√[1-x