计算26-x÷100×0.6-搜答案-大师作文网

等于1/X*（X-Y）

（1-x）/（x²+x-2）÷[(x²-1)/(x+2)]=-(x-1)/[(x-1)(x+2)]÷[(x-1)(x+1)/(x+2)]=-1/(x+2)×(x+2)/[(x-1)

(x^2-1/9)÷(3x+1)=(x-1/3)(x+1/3)÷(3x+1)=(x-1/3)÷3=x/3-1/9

计算x

原式=x2+2x+4(x+2)2÷(x−2)(x2+2x+4)3(x+2)÷1(x+2)(x−2)=x2+2x+4(x+2)2•3(x+2)(x−2)(x2+2x+4)•（x+2）（x-2）=3．

x÷6/35=26/45×13/25x=26/45×13/25×6/35x=676/13125

计算：x

x2x−5+255−x=x2x−5-25x−5=x2−25x−5=(x+5)(x−5)x−5=x+5，故答案为：x+5．

-[-4X^2+3X+X^2-2X]÷X-[-3x^2+x]]÷X-3x-1

（x²-6x+9）÷x+3分之x²-9x+18,=（x²-6x+9）×（x+3)/（x²-9x+18）=（x-3)²(x+3)/[(x-3)(x-6)

(x²-y²)÷(x+y)=(x-y)(x+y)÷(x+y)=x-y

原式=[x(x−2)x(x−2)+2(x−2)x(x−2)-x(x+1)x(x−2)]•x(x−2)x+4=−(x+4)x(x−2)•x(x−2)x+4=-1．

解(4x²-1)/(2-4x)÷(4x²+4x+1)/x=(2x-1)(2x+1)/2(1-2x)×[x/(2x+1)²=-(2x+1)/2×[x/(2x+1)²

原式=x(x²-2x+3-3)×2/x²=x²(x-2)×2/x²=2x-4

(3x-3/x²-1)÷(3x/x+1)-1/x-1=3（x-1）/[(x+1)(x-1)]÷[3x/(x+1)]-1/(x-1)=1/x-1/(x-1)=(x-1-x)/x(x-1)=-1

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

1/X(X+1)+1/(X+1)(X+2)+.+1/(X+99)(X+100)=[1/x-1/(x+1)]+[1/(x+1)-1/(x+2)]+.+[1/(x+99)-1/(x+100)]=1/x-1

原式=x²(x-1)/x(x+1)÷(x+1)(x-1)=x(x-1)/(x+1)÷(x+1)(x-1)=x/(x+1)²

X等于零你看式子会发现X可以消那么这个一元一次方程的的解就是X=0

计算：(x

原式=（x−2x+2-xx+2）•x+2x−1=−2x+2•x+2x−1=−2x−1．

27/26=1+1/26所以15*(1+1/26)=15+25/26

2.4/0.12*6.6=132