4x÷1.6-14=0.175解方程
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/19 03:28:45
![4x÷1.6-14=0.175解方程](/uploads/image/f/327197-29-7.jpg?t=4x%C3%B71.6-14%3D0.175%E8%A7%A3%E6%96%B9%E7%A8%8B)
原式=(3x²+3x-x²+x)/(x+1)(x-1)*x(x²-1)/x²(x²-4)=(2x²+4x)/(x+1)(x-1)*(x+1)
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550120x=550x=55/12=4.583
(x+2/x²-2x-x-1/x²-4x+4)÷x-4/x={(x+2)(x-2)/[x(x-2)²]-x(x-1)/[x(x-2)²]}·x/(x-4)={(
1、2.7x=8.1x=8.1÷2.7x=32、x=10.4-1.6x=8.83、0.64x=1.6x=1.6÷0.64x=2.54、x-26=20x=26+20x=465、2x=5.6-42x=1.
3+X=7/2.8X=5/2-3X=-1/22.5X=17.5X=74X-0.32=0.464X=0.78X=0.195
注意:本题x=2时题目没意义,应该舍去(这是很多学生错误所在)这里x只能取根号2-1
(4+5)X+14=42-2X-2*39x+14=(42-6)-2x9x+2x=42-6-1411x=22x=2
20+0.8x=x-14x-0.8x=20+140.2x=34x=170112-4x=2x(80-4x)112-4x=160-8x8x-4x=160-1124x=48x=12
原式=2x(x-2)/(x+2)×x(x+2)/(x-2)²×3(x-2)/x=6x当x=√3/2时原式=3√3
原式=x+(x+14)+(x+14)*1/2*3+(x+14)*2=x+(x+14)*(1+3/2+2)=x+(x+14)*9/2=x+9/2x+63=11/2x+63
38+4x=964x=96-384x=58x=58/4x=14.53.9x-1.2x=3.512.7x=3.51x=3.51/2.7x=1.31.6x+x=3.92.6x=3.9x=3.9/2.6x=
x^3-2x^2+4x/x^2-4x+4÷x^2-2x+4/x-2=x(x²-2x+4)/(x-2)²÷(x-2)/(x²-2x+4)=x(x²-2x+4)/(
x(x+1)(x²-2x-4)=0x1=0x2=-1x²-2x-4=0x²-2x+1=5(x-1)²=5x3=1+√5x4=1-√5x³-2x+1=0
请稍等(x+4)÷5=6x+4=30x=261.2×(x+5)=14.4x+5=12x=74.2x÷1.6-14=0.1754.2x÷1.6=14.1754.2x=22.68x=5.4(10-7.5)
8x+56=4248x=368x=46
1.6x=4(x+1)6x=4x+42x=4x=22.4(3+2x)-5x=1812+8x-5x=183x=6x=2检验:左边=4×(3+2×2)-5×2=28-10=18右边=18左边=右边所以x=
(5x+14)÷(x+2)==(5x+14)/(x+2)最简形式,不要再算了再问:[(x+2)²+2(x+2)(x-2)-3(x+2)(x-3)]÷(x+2)=?化简再答:[(x+2)&su
原方程可化为:(2x-4)÷(3x)=14/272x-4=(14/27)*3x2x-4=(14/9)*x18x-36=14x18x-14x=364x=36解得:x=9
4×(0.8+x)=723.2+4x=724x=72-3.24x=68.8x=68.8÷4x=17.28x+2x=31.410x=31.4x=31.4÷10x=3.14(x+1.8)÷4=2.5(x+
x²-3x=2x+14x²-5x=14∴﹙4x³-6x²+2x﹚/2x-﹙x+1﹚²+1=2x²-3x+1-x²-2x-1+1=x