tentukan pengelesaian persamaan | 4 + x | - | x - 2 | =0
Matematika
ika942
Pertanyaan
tentukan pengelesaian persamaan | 4 + x | - | x - 2 | =0
2 Jawaban
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1. Jawaban yoan1710
A. 4+x - x-2=0
x-x=2-4
x= -2
B. -(4+x) -(x-2)= 0
-4-x-x+2 = 0
-2x=4-2
-2x=2
X=2/2
X=1 -
2. Jawaban ahreumlim
| 4 + x | - | x - 2 | =0
|4 + x| = |x - 2|
(4 + x)² = (x - 2)²
16 + 8x + x² = x² - 4x + 4
16 + 8x = -4x + 4
8x + 4x = 4 - 16
12x = -12
x = -1
HP = {-1}