Solve the following equation
|x+2| = 2
x = 0 or x = -4
x = 0
x = -4
x = 0 and x = 4
2007-10-25 10:27:14 · 6 answers · asked by Marcela M 1 in Science & Mathematics ➔ Mathematics
|x+2| = 2
you need to solve two equations
1) |x+2| = (x+2) if x is greater or equal to -2
x+2 =2 -----> x =0
2) |x+2| = -(x+2) when x is less or equal to -2
(-x -2 ) =2
x = -2 -2 =-4
2007-10-25 10:31:39 · answer #1 · answered by Anonymous · 0⤊ 0⤋
x=0
2007-10-25 10:37:05 · answer #2 · answered by Bob H 7 · 0⤊ 0⤋
x=0
2007-10-25 10:30:12 · answer #3 · answered by daniel 4 · 0⤊ 0⤋
X + 2 = 2 ( 1 )
X = 2-2
X = 0
Use the same signal in the expression x + 2 ( 1 )
Case 2 , change the signal in the expression x+2 :
- x -2 =2
-x = 2 +2
-x = 4
When the signal of x show ( - ) multiplied by minus ( - ) . Changing the signal of x , the aim is to have a positive signal to X .
X = -4
The answer is x = 0 and x= -4
2007-10-25 10:40:58 · answer #4 · answered by Branco 5 · 0⤊ 0⤋
approach A: 5X = a hundred and fifty five 5 x X = a hundred and fifty five X = a hundred and fifty five/5 X = 31 OR approach B: 5X = a hundred and fifty five 5 x X = a hundred and fifty five 5 = a hundred and fifty five/X X = a hundred and fifty five/5 X = 31 the precise approach is greater convenient, however the backside is likewise in concept appropriate. In tests, the precise approach is the applicable to apply. wish this facilitates!
2016-11-09 11:20:45 · answer #5 · answered by moscovic 4 · 0⤊ 0⤋
the answer is:
x = 0 or x = -4
the bars (| |) mean absolute value which means there are no negatives!
2007-10-25 10:30:29 · answer #6 · answered by Ceciley 2 · 0⤊ 0⤋