X(1+20%)=X+600 =120%X=X+600 = X(1+20%)=X+600 =120%X=X+600 =
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X(1+20%)=X+600 =120%X=X+600 = X(1+20%)=X+600 =120%X=X+600 =
X(1+20%)=X+600 =120%X=X+600 =
X(1+20%)=X+600
=120%X=X+600
=
X(1+20%)=X+600 =120%X=X+600 = X(1+20%)=X+600 =120%X=X+600 =
X(1+20%)=X+600
120%X=X+600
1.2x-x=600
0.2x=600
x=3000
X(1+20%)=X+600 =120%X=X+600 = X(1+20%)=X+600 =120%X=X+600 =
x*x*x*x+2008x*x+2007x+2008(提示:x*x*x-1=(x-1)*(x*x+x+1))
若1+x+x*x+x*x*x=0,求x+x*x+x*x*x+.+x(2000次幂)
请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360
x(x+1)(x-1)=120
(X-X*20%-18-(X-X*20%-18)*10%=X*1/2-3(过程)
x/(120-x)=x/60
麻烦解4道分式方程(20分)(x/2x-5)+(5/5-2x)=1(x+1/x*x-2x)-(1/x)=3/x-2(1-x/5-x)-(5-x/1-x)=8/x*x-6x+5(x+1/x-1)-(4/x*x-1)=1去掉括号,不管前面正负,都不变号~
x*x*(1/4)=20x
已知x除以(x*x-x+1)=7,求x*x除以(x*x*x*x+x*x+1)的值
(x+60)x(1+10%)-(1-20%)x=120
(x+x)+(x-x)+(x/x)=11.2
120/(x+20)+1=120/x
x-(20%x+55%x)=120 X是什么
X(X-1)=X
x-20%x=120,
数学题1)(x-1)(x+1)=x²-1,(x-1)(x²+x+1)=x³-1,(x-1)(x^3+x^2+x+1)=(1)(x-1)(x+1)=x²-1,(x-1)(x²+x+1)=x³-1,(x-1)(x^3+x^2+x+1)= 猜想(x-1)(x^n+x^n-1+...+x^2+x+1)(2)(x-1)(x^48+x^48+...+x^62+x+1)=(3)(x^20-1
5x+15x =( + )x =20x