2x-80%x=48
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2x-80%x=482x-80%x=482x-80%x=482x-80%x=482x-0.8x=481.2x=48x=48÷1.2x=40所以X=402x-80%x=481.2x=48x=40(2-8
2x-80%x=48
2x-80%x=48
2x-80%x=48
2x-80%x=48
2x - 0.8x = 48
1.2x = 48
x = 48 ÷ 1.2
x = 40
所以X=40
2x-80%x=48
1.2x=48
x=40
(2-80%)x=48
1.2x=48
x=40
2x-80%x=48
2x - 0.8x = 48
1.2x = 48
x = 48 ÷ 1.2
x = 40
x+(x+1)+(x+2)=48
80*(x-2)=48x
48X=80(X-2)
2x-80%x=48
解方乘:2x-80%x=48
(x-1)(x-2)(x-3)(x-4)=48
f(x)=x^2+x (x
2[x-(48-x)]=2(48-x)-[x-(48-x)]解这个方程
x^2=x
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
f(x)=根号(8x-x^2)-根号(14x-x^2-48)的最大值?
20+0.8x=x-14 112-4x=2x(80-4x)
3x*x=1600+x*x-80x
x/x平方-x+2=2x/x+1
f(x)=x|x|+2x (x
(X+1)X(X+2)X(X+3)=504
一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X