(x-3)/x=40% x=?
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(x-3)/x=40% x=?
(x-3)/x=40% x=?
(x-3)/x=40% x=?
(x-3)/x=40%
两边同乘X,得
x-3=0.4x
x-0.4x=3
0.6x=3
x=3÷0.6
x=5
请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360
(x+x)+(x-x)+(x/x)=11.2
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
(X+X)+(X-X)+(X*X)+(X/X)=100
(x/x-2)-2=3(x-2)/x
函数f(x)=x立方-3x(|x|
x(2x-3)=x² 求x,
(x-3)/x=40% x=?
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
3/x-1=4/x 6/x+1=x+5/x(x+1)
x-40%x=
4(X+5)+X=80 5X+10=3X+4(X+5)+X=80 5X+10=3X+40
x*x*x*x+2008x*x+2007x+2008(提示:x*x*x-1=(x-1)*(x*x+x+1))
3x*x=1600+x*x-80x
(X+1)X(X+2)X(X+3)=504
x*x*x*x*x=80000?
60%x+25=40 x+30%x=52 19-120%x=7 4分之3x-5%x=17.5 x-10%x=18 (1-25%)x=36 2x+30%x=9.2