8x+1/5x+3>1 求x
来源:学生作业帮助网 编辑:六六作业网 时间:2025/02/01 16:50:23
8x+1/5x+3>1求x8x+1/5x+3>1求x8x+1/5x+3>1求x(8X+1)/(5X+3)-1>0(8X+1-5X-3)/(5X-3)>0(3X-2)/(5x-3)>0等价于(3X-2)
8x+1/5x+3>1 求x
8x+1/5x+3>1 求x
8x+1/5x+3>1 求x
(8X+1)/(5X+3)-1>0
(8X+1-5X-3)/(5X-3)>0
(3X-2)/(5x-3)>0
等价于(3X-2)(5X-3)>0
X2/3
(8x+1)/(5x+3)>1
8x+1>5x+3
8x-5x>3-1
3x>2
x>2/3
同时5x+3<>0 <>代表不等于
x<>-3/5
经检验,x<>-3/5不在x>2/3范围内
所以解为x>2/3
(8x+1)/(5x+3)>1
(8x+1)/(5x+3)-1>0
(8x+1-5x-3)/(5x+3)>0
(3x-2)/(5x+3)>0
两个数相除大于0,则符号相同
所以相乘也大于0
所以(3x-2)(5x+3)>0
x>2/3,x<-3/5
8x+1>5x+3
x>2/3
X〈-3/5或X〉2/3
求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
已知x=2π+1求 |x-1|+|x-2|+|x-3|+|x-4|+|x-5|+|x-6|+|x-7|+|x-8|+|x-9|+|x-10|
如果1+x+x^2+x^3=0,求x+x^2+X^3+x^4+x^5+x^6+x^7+x^8的值,
已知x=2π+1.求(X-1)+(X-2)+(X-3)+(X-4)+(X-5)+(X-6)+(X-7)+(X-8)+(X-9)+(X-10)
3^x=2^x,求x.5^(x-1)·10^3x=8^x求x
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少
已知3x*x-x=1,求6x*x*x+7x*x-5x+2000
|x^2-4x+3|+|x+1|>8 求x
x*x+3x+1 =5 求x
8x+1/5x+3>1 求x
(x+3)(2x+5)-(2x-1)(x-8)=0求x
x为实数,求代数式|x-3|+|x+1|+|x+5|+|x-8|的最小值
已知x²-8x-3=0,求(x-1)(x3)(x-5)(x-7)
已知x^5+x^4-5x^3-2x^2+4x-8 求x+1/x已知x^5+x^4-5x^3-2x^2+4x-8 求x+1/x出错了!已知x^4-5x^3+8x^2-5x+1=0 求x+1/x
急,求不等式的解法{ x(2x-5)>2x的平方-3x-4{ (x+1)(x+3)+8x>(x+5)(x-5)-2