X减0.25X=54
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/12 21:21:33
再答:�ף����ǵ�һ������ѡ���ң�лл��ף��ѧϰ��
6/x=x-56=x(x-5)x^2-5-6=0(x-6)(x+1)=0x1=6x2=-1再问:^是什么再答:^2是平方
0.3x-x×0.25=21.15-7x0.3x-0.25x=21.15-7x0.5x=21.15-7x0.5x+7x=21.157.5x=21.15x=21.15÷7.5x=2.82这里涉及到“两边
(0.3+7-0.25)x=21.157.05x=21.15x=21.15/7.05=3
(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
0.3x-x乘以0.25=21.15-7x0.05x+7x=21.157.05x=21.15x=3
第一个:两边乘(x-3)(x-1)得x=-3第二个:两边乘(x-1)(2x-2)得x=1和x=7/6但x=1是增跟要舍去.故x=7/6再问:求检验,再答:将结果代入左边得多少,右边得多少。左边等于右边
x-0.25=0.25x化为x-0.25x=0.25即0.75x.=0.25所以x=0.25/0.75=1/3=0.333333
cf(x)的图像是g(x)=x-1/x关于x轴对称后的图像
2.2x=44,x=200.3x=54+18=72,x=240
(X*X-X)/X=120X²=121XX=121或X=0(舍去)所以X为121
再问:请说明一下理由再答:我发的图片就是解答过程,就是将这个式子展开,展开之后再化简
方程是啥?如果为:x^0.75-x^0.25=0.75令t=x^0.25,则x^0.75=t^3方程化为:t^3-t=0.75,解得:t=1.26255112740716x=t^4=2.5409486
x/x-3减x+6/x^2-3x加3/x=[x*x-(x+6)+3(x-3)]/x(x-3)=(x^2-x-6+3x-9)/x(x-3)=(x^2+2x-15)/x(x-3)=(x+5)(x-3)/x
0.3x+7x-0.25x=21.257.05x=21.25705x=2125x=425/141
0.3x+7x-0.25x=7.05x7.05x=21.15x=3
#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
10x-3.14*x*x*0.25=3.14*x*x*0.7510x=3.14*x*x*0.75+3.14*x*x*0.253.14*x*x*(0.75+0.25)-10x=03.14*x*x-10x
2x等于x+15x等于15
6X=3X15X=45/6X=7.575X减3X=1572X=15X=15÷72X=5/247X=25X35X=25X35÷7X=12554X=34X2X=68/54X=34/2712X=23X14X