x-2的绝对值+x+5的绝对值=6
人气:312 ℃ 时间:2020-06-04 01:30:14
解答
A:x ≥ 2,|x-2| + |x+5| = x-2 + x+5 = 62x = 3,x = 3/2 < 2,不符合前提,舍去B:-5 ≤ x < 2,|x-2| + |x+5| = 2 -x + x+5 = 6,7 = 6,在该前提下无解C:x < -5,|x-2| + |x+5| = 2 -x - x - 5 = 6-2x = 9,x = -9/2 > -5,...
推荐
- 若2.5-x的绝对值=-(2.5-x),则
- 解决绝对值方程:|x-|2分之3x-5|-1|=6
- x+2的绝对值=-6的绝对值,求x
- 已知x满足不等式3(5x+2)+5<4x-6(x+1),化简|x+1|-|1-3x|=_.
- 若x+5的绝对值+y-6的绝对值=0,则x=(),y=() 急啊~
- I have just bought a new bike.这句话是对的,可是买是不可延续的啊,
- △abc是等边三角形,D是AB的中点,E在AC上,AE:EC=1:3,则∠ADE=
- The desk has two d_____ and there are some books in them. Your r_____is big and bright.
猜你喜欢