12X*9(10-X)=1解方程
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/06/23 13:45:50
12X*9(10-X)=1解方程
![12X*9(10-X)=1解方程](/uploads/image/z/6371572-4-2.jpg?t=12X%2A9%2810-X%29%3D1%E8%A7%A3%E6%96%B9%E7%A8%8B)
12X*9(10-X)=1
1080x-108x^2=1
108x^2-1080x+1=0
x = {1080±根号(1080^2-4*108) } / (2*108) = { 90±根号(90^2-3) } / 3 = 30 ± (根号8097)/3
x1 = 30 - (根号8097)/3
x2 = 30 + (根号8097)/3
1080x-108x^2=1
108x^2-1080x+1=0
x = {1080±根号(1080^2-4*108) } / (2*108) = { 90±根号(90^2-3) } / 3 = 30 ± (根号8097)/3
x1 = 30 - (根号8097)/3
x2 = 30 + (根号8097)/3
解方程:x(x-1)/1+x(x+1)/1…+(x+9)(x+10)/1=11?12
12X*9(10-X)=1解方程
1/x(x+1)+1/(x+1)(x+2)+...+1/(x+9)(x+10)=1/(x+10),解方程
解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1
解方程:2x(x-1)-x(3x+2)=-x(x+2)-12
解方程 (9/10)^x=1/3 求x
10x+18=12(x-1)解方程
解方程.1/2x(10-x)=12
解方程:16^x+12^x=9^x
⒈ 解方程 (X+7)/(X+6)+(X+9)/(X+8)=(X+10)/(X+9)+(X+6)/(X+5)
解方程:x/(x-2)+(x-9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6)
解方程.x-4/5x=20 2/3x+1/2x=49 75+7/10x=102 2x+9/2=12