解方程：(1+x)[2(-36x)^2/(9x+1)^2-4(72x-9)/(9x+1)]=4.

来源：学生作业帮编辑：拍题作业网作业帮分类：数学作业时间：2024/04/30 07:55:19

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(1+x)[2(-36x)²/(9x+1)²-4(72x-9)/(9x+1)]=4
(1+x)[2(-36x)²/(9x+1)²-4(72x-9)(9x+1)/(9x+1)²]=4
(1+x)×[2×(-36x)²-4×(72x-9)(9x+1)]/(9x+1)²=4
(1+x)×[2×(-36x)²-4×(72x-9)(9x+1)]=4×(9x+1)²
(1+x)×[2×1298x²﹣4×(648x²﹣9x﹣9﹚=4×(81x²﹢18x﹢1﹚
(1+x)×﹙2592x²﹣2592x²﹢36x﹢36﹚=4×(81x²﹢18x﹢1﹚
(1+x)×﹙36x﹢36﹚=4×(81x²﹢18x﹢1﹚
4×(1+x)×﹙9x﹢9﹚=4×(81x²﹢18x﹢1﹚
(1+x)×﹙9x﹢9﹚=81x²﹢18x﹢1
9x﹢9x²﹢9﹢9x=81x²﹢18x﹢1
9x²﹢18x﹢9=81x²﹢18x﹢1
81x²﹢18x﹢1﹣9x²﹣18x﹣9=0
72x²﹣8=0
72x²=8
x²=72÷8
x²=9
x=√9
x=±3

解方程：x/(x-2)+(x-9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6) 解方程(3x^2+9x+7)/(x+1)-(2x^2+4x-3)/(x-1)-(x^3+x+1)/(x^2-1)=0 解方程 (3x+1)(3x-1)=(x+2)(9x-4) 2（x-3)(x-2)-(x+3)²=(x-1)(x 1/x(x+1)+1/(x+1)(x+2)+...+1/(x+9)(x+10)=1/(x+10),解方程初中数学解方程x/x-2+x-9/x-1等于x+1/x-1+x-8/x-6 x/(x-2)+(x-9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6)谁会解这道方程题分式方程.x/(x-2)+(x-9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6) x/(x-2)+(x+9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6)怎样解这道方程解方程:x-1/x+2 +9/(x+2)(x-1)=3/x-1 解方程：2x+9/x+3 - 1/x-3 = 5 - 3x-2/x 解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1 解方程：[2x]+[3x]=9x-7/4 x= - 1/36,x=7/36.