(111 999)÷[56x(
来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 11:56:31
(56-X)=3(34-X)56-X=102-3X2X=46X=23
[(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
=(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/
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:
X=32
0.8*X=56X=56/0.8X=70
x+(20-x)=56x+20-x=5620=56所以原方程无解
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-
(x^-7x+6)(x^-x-6)+56=(x-1)(x-6)(x-3)(x+2)+56=?这个题是什莫意思?
(x²-7x+6)(x²-x-6)+56=(x-1)(x-6)(x-3)(x+2)+56=(x-6)(x+2)(x-1)(x-3)+56=(x²-4x-12)(x&sup
你算错了.X平方项等式两边化掉了.最后算出X=2
因式分解得(x-8)(x+7)=0所以x=8orx=-7
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
x-56=20%xx-56=0.2xx-0.2x=560.8x=56x=56÷0.8x=70很高兴为您解答,【the1990】团队为您答题.请点击下面的【选为满意回答】按钮.
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