作业帮若方程3x-2(x-5)=12与关于x的方程
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/01 19:17:18
2x+3x+5x=3210x=32x=3.2
x^4+2x^3+5x^2+4x-12=x^4-x³+3x³-3x²+8x²-8x+12x-12=x³(x-1)+3x²(x-1)+8x(x
((X-2)(X-4)-(X-3)^2)/(X-3)(X-4)=((X-5)(X-7)-(X-6)^2)/(X-6)(X-7),-1/(X^2-7X+12)=-1/(X^2-13X+42),6X=30
6x=12x=2
x(2x-4)+3x(x-1)=5x(x-3)+82x²-4x+3x²-3x=5x²-15x+88x=8x=1
x^5-x^3-2x=0x(x^4-x^2-2)=0x(x²-2)(x²+1)=0x1=0,x2=√2,x3=-√2
2x(x-1)-x(3x+2)=-x(x+2)-122x^2-2x-3x^2-2x=-x^2-2x-122x^2-3x^2+x^2-2x-2x+2x=-12-2x+12=0-2(x-6)=0x-6=0
是方程叫恒等式方程X的解是所有实数
x1=1/3(10-7(2/(1357-9√[22717]))^(1/3)-(1/2(1357-9√[22717]))^(1/3));x2=10/3+1/6(1+i√[3])(1/2(1357-9√[
(2x-3/x)²+6(2x-3/x)+5=0(2x-3/x+5)(2x-3/x+1)=02x-3/x+5=02x-3/x+1=02x²+5x-3=02x²+x-3=0(
将x=5代入方程（2*5-7）/4+（5-m）=（3*5+2）/123/9-m=17/12m=117/17
x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)x/(x-2)=2x/(x-3)+(1-x)/(x-2)(x-3)x(x-3)/(x-2)(x-3)=2x(x-2)/(x-2)(x-3)
6X^3=12X^3=2X=｛2的立方根｝
3+2x=5x5x-2x=33x=3x=1
-3x^2+5x+12=0-(x-3)(3x+4)=0x-3=03x+4=0x1=3x2=-4/3
2(x-3)(x+5)=x^2+(x+2)(x-2)+(x+7)2(x^2+2x-15)=x^2+x^2-4+x+72x^2+4x-30=2x^2+x+33x=33x=11
(x+1)(x-3)=2x+5x²-2x-3=2x+5x²-4x=8x²-4x+4=8+4(x-2)²=12x-2=±2√3x=2-2√3,x=2+2√3
设X为正数则：（X+2）-（3X+5）=1+X解得X=-4/3设X为负数则：（-X+2）-（-3X+5）=1+（-X）解得X=4/3
解方程：(x-2)(x^2-6x-9)=x(x-5)(x-3)将方程展开：X^3-6x^2-9x-2x^2+12x+18=x^3-8x^2+15x合并同类项得：12x=18则x=18/12=3/2