x÷270+x÷450=10
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[(x+2)/(x*x-2x)-(x-2)/(x*x-4x+4)]/[(x-4)/x]=[(x+2)/x(x-2)-(x-2)/(x-2)²]/[(x-4)/x]=[(x²-4-x
第一个两边不是等式.无解.第二个:X÷3+(10--X)×2=10X÷3+20-2X=10X/3-2X=10-20-1/2/3X=-10X=6
楼主给出的方程不成立.
=(x+1)(x-1)(x+1)x-1--------------÷------×-----(x-1)^2(x-1)x+1=x+1---x-1
(x+1-1/1-x)÷(x-x²/x-1)=[(x+1)+1/(x-1)]×[-(x-1)/x(x-1)]=(x²-1+1)/(x-1)×(-1/x)=-x/(x-1)(x-4/
x的立方等于它的本身,X=1X=-1X=0x^2+10x+25/(x-5)÷x/(x^2-5x)一一代入X=1x^2+10x+25/(x-5)÷x/(x^2-5x)=36x=-1x^2+10x+25/
(x²+7x+10)/(x²+6x+5)×(x³+1)/(x²+4x+4)÷(x²-x+1)/(x-2)=(x+2)(x+5)/(x+5)(x+1)×
解题思路:分式的混合运算,按照分式运算法则进行计算。解题过程:
(10-√2X×2X-25)÷2=X10-√(4x^2-25)=2x√(4x^2-25)=10-2x4x^2-25=100-40x+4x^240x=125x=25/8
(1)1+0.4x=0.2(x+10)(2)x÷2=x+2001+0.4x=0.2x+2-200=x/20.2x=1-400=xx=5x=-400
先化简去掉中括号:(1-x+x-1/x)÷(1-1/x-1)再化简:(1-1/x)÷(-1/x)=(1-1/x)x(-x)=1-x
(2x-6)/(x²-4x+4)÷(3-x)/(x²+6x+9)×(2-x)/(x+3)=2(x-3)/(x-2)^2X(x+3)^2/(3-x)X(2-x)/(x+3)=2(x-
①(-x)^3·x·(-x)^4÷x^5=-x^4*(-x)^4÷x^5=x^8÷x^5=x^3②(x^3)^4+x^10·x^2+x·x^3·x^8=x^12+x^12+x^12=3x^12③(16
2x/(x-2)(x+1)÷(1-x/x+1)-x²+2x/x²-4?=2x/(x-2)(x+1)×(x+1)/(1-x)-x(x+2)/(x+2)(x-2)=2x/(x-2)(1
题目打错了,看看是下面这样吗?﹙x²-1﹚/﹙x²+4x+4﹚÷﹙x+1﹚×﹙2x+4﹚/﹙x-1﹚=[﹙x-1﹚﹙x+1﹚/﹙x+2﹚²]×[1/﹙x+1﹚]×[2﹙x
点击看大图,绝对正确答案
再答:采纳哟
8.5
x(2-1/x)+x/(x^2-2x)÷(3-x)/(x^2-4)=x((2x-1)/x)+x/(x^2-2x)x(x^2-4)/(3-x)=(2x-1)+(x+2)/(3-x)=(7x-3-2x^2
130%x+x=4.61.3x+x=4.62.3x=4.6x=2x÷50%=10x=10乘2x=20x/9-x/15=16%x(1/9-1/15)=16/100x(5/45-3/45)=4/25x=4