作业帮30X等于36*40
来源：学生作业帮助网 编辑：作业帮 时间：2024/10/03 05:09:49
x-40%x=420.6x=42x=70
x/3+x=36等式两边乘以3x+3x=36*34x=108x=27
33依次差168421即2^N
(1-0.3)x=0.7x(1+0.2)x=1.2x
X-20％X=40x-0.2x=400.8x=40x=50
x分之36加x减8分之4等于x减2分之4036/x+4/(x-8)=40/(x-2)9/x+1/(x-8)=10/(x-2)9(x-8)(x-2)+x(x-2)=10x(x-8)9x^2-90x+14
3236/24=48/x,x=48x24/36=32.
25(1-X)^2=36(1-x)^2=36/251-x=正负6/5x1=1+6/5=11/5x2=1-6/5=-1/5
x=54/0.36x=150
40%:20=x:1520x=15×40%20x=6x=6÷20x=0.3
36/x=4x除以4得：9/x=x乘以x得:x^2=9两边开平方得：x=±3
x-6/x=40x^2-40x-6=0(x-20)^2=406x-20=土√406x1=20+√406x2=20-√406.
x/5+x=326x/5=32x=80/32x/5-x/4=243x/20=24x=16030%x=45x=4500/30=150X+12%X=2.241.12x=2.24x=2
x-40
x-40%x=0.9（1-0.4）x=0.90.6x=0.96x=9x=1.5
1.20/50=40%2.2x+40%x=7.2(2+0.4)x=7.2x=33.30*2/3+80%x=6020+0.8x=600.8x=40x=504.错
x/(x+5)=4040(x+5)=x39X=-200x=-200/39
525o∩_∩o
8x+x²=36（x+4）²=52x+4=±2√13x=-4±2√13再问：为什么8x+x²=36（x+4）²=52再答：8x+x²=36用配方法x&