0.4x-0.15x=125-搜答案-神马作文网

x=0.05/（0.4-0.1x)

x=0.05/（0.4-0.1x)0.4x-0.1x²=0.05x²-4x+4=4.5(x-2)²=4.5x1=2+3√0.5,x2=2-3√0.5

x的三次等于125,x=?

5

方程x-0.4x+360:x=3:

(0.6x+360):x=3:40.2x+120=1/4x0.8x+480=xx=2400再答：x:60%x+360=4:31/4x=20%x+120x=0.8x+480x=2400再答：小意思再问：

4x-0.4=5x-(-24.6)

4x-0.4=5x-（-24.6）移项得到5x-4x=-（-24.6）-0.4得到x=25

125x³=-8求x

125x³=-8x³=-8/125两边开立方得：x=-2/5

X-0.4X=36

X-0.4X=360.6X=36X=60

（X+X)+(X-X)+(X*X)+(X/X)=1002X+0+X*X+1=1002X+X*X=99X(X+2)=99X=9再问：请问X(X+2)=99解为什么就等于9了呢没看懂再答：换成算术法你就明

x：123=123/125；x=?

x=123*123/125=39483/125再问：x:123/564=123:564;x=???再答：x=(123/564)*123/564=1681/35344

0.2x+0.4x=120.6x=12x=12÷0.6x=2020x+x=42021x=420x=420÷21x=20

解方程：3.5x=0.15+x

3.5X=0.15+X3.5X-X=0.152.5X=0.15X=0.06

x一0.4x=0.

0.6×=0.54×=0.54÷0.6×=0.9

0.5(x+0.4)=x-1.

0.5x+0.2=x-1.50.5x=1.7x=3.4

0.4x-2.5x=0.05-3.22.1x=3.15x=1.5

X—0.4X=16.2

X—0.4X=16.20.6X=16.2X=27

解方程：125%x-x=28

(125%-1)x=2825%x=28x=112

0.4x+0.8x*=10

原方程化为0.4x+13.6x-0.8x²=10那么-0.8x²+14x-10=0故2x²-35x+25=0即求得x=5(7±√41)/4

2.8x-0.17=0.4x+0.19

2.4x=0.36x=0.15

#includesintjiesheng(intn)//用于计算阶乘如：3!{if(n=1)rerunn;returnn*hh(n-1)}doubledigui(intn,intx)//用以计算y=x

2x+0.4x=48(2+0.4)x=48x=48/2.4x=20(并检验)2×20+0.4×20=40+8=488x-x=14.7(8-1)x=14.7x=14.7/7x=2.135x+13x=9.

x+x=x+15

2x等于x+15x等于15