x-1分之3-x-1的差除于x的平方-2x 1分之x-2
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解题思路:根据等式的性质,等式的两边先同时×1/4,再同时×3/2即可。解题过程:2/3x÷1/4=12解:2/3x÷1/4×1/4=12×1/42/3x=32/3x×3/2=3×3/2x=9/2
x^2-2x-1=0显然x不等于0所以两边可以除以xx-2-1/x=0x-1/x=2两边平方x^2-2+1/x^2=4x^2+1/x^2=6x^3-2x-1/x^3+2/x=(x^3-1/x^3)-2
(3/2X+3)-(2/3X+1)>03/2X+3-2/3X-1>03/2X-2/3X>-25/6X>-2X>-12/5X大于-12/5时,代数式2分之3X+3与3分之2X+1的差是正数
35分之4x=7分之2(4/35)x=2/7x=2/7×35/4x=5/2x除于8分之3=27分之16x/(3/8)=16/2727x=16×3/827x=6x=2/9x+4分之1=100x+1/4=
(x-1分之x-x+1分之x)除与1-x分之2x=[x/(x-1)-x/(x+1)]÷2x/(1-x)={[x(x+1)-x(x-1)]/(x+1)(x-1)}÷2x/(1-x)=2x/(x+1)(x
楼主说的除指的是除以吧?3/4x=1/2x=(3/4)/(1/2)=3/2
原式=[(x+2)/x(x-2)-(x-1)/(x-2)²]*x/(x²-4)=[(x+2)(x-2)-x(x-1)]/x(x-2)²*x/(x+2)(x-2)=(x
(3x-2)/5≥(2x+1)/3-1两边乘159x-6≥10x+5-15x≤4所以x=0,x=1,x=2,x=3,x=4
x=0.5ans=5
1.X取何值时,代数式4分之2X-3与3分之X+4的差不大于1(2x-3)/4-(x+4)/3=(2x-25)/12
不知道你题目是不是有问题这句话应该为(1/16)/(5x/12)=x/3整理x^2=9/20
∵1/(x^2+3x+2)+1/(x^2+5x+6)+1/(x^2+7x+12)=1/(3x),∴1/[(x+1)(x+2)]+1/[(x+2)(x+3)]+1/[(x+3)(x+4)]=1/(3x)
Y1-Y2=1就是这个意思所以4X+2/6-10X+1/6=-6X-1/6=1-6X-1=6解得X=7/6
10x/3+1/5=1(50x+3)/15=150x+3=1550x=12x=6/25
(1-x+2分之1)除于x+2分之x的2次方-1=(1-x+1/2)/x+(x²-1)/2=(3/2-x)/x+(x²-1)/2=3/2x-1+x²/2-1/2=x
答;把x带进去,317/24
5x*(x-3)=(x-3)*(x+1)若x=3时该式成立但无意义若x≠3则两边同除以x-3 得5x=x+1x=1/4
原式=[(x+2)/x(x-2)-(x-1)/(x-2)²]÷(4-x)/x=[(x+2)(x-2)/x(x-2)²-x(x-1)/x(x-2)²]÷(4-x)/x=[(
1/4x+2=41/4x=4.2-21/4x=2.2x=2.2÷1/4x=8.8x÷2/15=1/3x=1/3×2/15x=2/45