若2分之3x 1的值比3分之2x-2的值小1,则x的值为几

(2x-y)/(x+3y)=2所以原式=2(2x-y)/(x+3y)-3(x+4y)/(2x-y)=2(2x-y)/(x+3y)-3/[(2x-y)/(x+3y)]=2×2-3/2=5/2

1/2[2x-1/3(10-7x)]-1/2x-1/3[x-1/2(x+1)]=3x-1/6(10-7x)-1/2x-1/3x+1/6(x+1)=36x-10+7x-3x-2x+x+1=189x=27

X=负五分之一

4x的平方+根号3x=14x的平方+根号3x-1=0若两个根分别是X1,X2,则x1+x2=-√3/4,x1*x2=-1/4X1分之X2+X2分之X1=(x2²+x1²)/(x1x

x²－4x＋2＝0由韦达定理得：x1＋x2＝4,x1·x2＝2∴(1)x1+x2+3x1x2=4+3*2=10(2)x2/x1+x1/x2=(x2²+x1²)/x1x2=

X1＋X2=-B/A=2X1*X2=C/A=1/2求得X1=1+根号2或者X1=1-根号2从而求出X2的值X1/X2+X2/X1=(X1*X1+X2*X2)/(X1X2)=6

∵x²+6x+3=0∴x1+x2=-6x1x2=3x1/x2+x2/x1=(x1+x2)²-2x1x2/x1x2=10

5分之3比2分之1等于X比3分之2,X等于5分之45分之3比2分之1比等于3分之2比XX等于5分之6乘3分之2X等于5分之4

(1/3)/(1/20)=(16/9)/x(1/3)X20=(16/9)/xx=(16/9)X(3/20)x=4/1510/x=(1/2)/(4/5)10/x=(1/2)X(5/4)10/x=5/8x

（x-1）/3=(x+6)/2-1;2(x-1)=3(x+6)-6;2x-2=3x+18-6;x=-14;很高兴为您解答,skyhunter002为您答疑解惑如果本题有什么不明白可以追问,

(x-3)/2+1=(1-x)/3左右两边都乘以6得3(x-3)+6=2(1-x)移项得5X=5所以X=1.再问：已知方程6x-2分之3-x=5与方程2分之x-3-3分之x-a=1同解，求a的值(要过

利用x1+X2=-B/A,x1x2=C/A(1)1/x1+1/x2=(x1+x2)/x1x2=-(-6/2)/(3/2)=-2(2)在菱形ABCD中边长是5,所以有OA^2+OB^2=5^2=25OA

X1+X2=3/2X1*X2=-5/2(1)1/X1+1/X2=(X1+X2)/X1*X2=-3/5(2)x1²+x2²=(X1+X2)²-2*X1*X2=29/4(3)

（x²-1）/x=3/2x²-1-3/2x=02x²-3x-2=0十字相乘x=-1/2或者x=2

（1）解是x1等于a,x2等于a分之2（2）在方程x+X分之2=a+a分之2两边同时乘以ax,得出a乘以(x的平方)+2a=（a的平方）乘以x+2x,移项后得到a乘以(x的平方)-（a的平方+2）乘以

2分之3x+1+1=3分之2x-29x+3+6=4x-45x=-4-95x=-13x=-13/5

x1+x2=-3/2x1x2=-21/x1+1/x2=（x1+x2)/x1x2=(-3/2)/(-2)=3/4x1²+x2²=(x1+x2)²-2x1x2=(-3/2)&

X1+X2=-6/2=-3X1*X2=-3/21/X1+1/X2=(X1+X2)/(X1X2)=-3/(-3/2)=2

x1+x2=4x1x2=-1(x1+x2)^2/(1/x1+1/x2)=(x1+x2)^2*x1x2/(x1+x2)=x1x2*(x1+x2)=-4

2x²+5x-3=0（2X-1)(X+3)=0所以有X1=1/2X2=-3或者X1=-3X2=1/2则|x1-x2|=3.51/x1²+1/x2²=4+1/9=37/9