Materi : Konsep Mutlak
|4x + 5| = 8
1) ( 4x + 5 ) = 8
4x = 8 - 5
4x = 3
x = ¾
2) ( - 4x - 5 ) = 8
4x = - 8 - 5
4x = - 13
x = -13/4
HP = { x = ¾ , x = -13/4 }
|x - 6| - 9 = 3
1) ( x - 6 ) - 9 = 3
x - 15 = 3
x = 3 + 15
x = 18
2) ( - x + 6 ) - 9 = 3
x = - 3 - 3
x = -6
HP = { x = 18 , x = -6 }
|x - 3| = |2x + 4|
1) ( x - 3 ) = ( 2x + 4 )
x - 3 = 2x + 4
2x - x = - 4 - 3
x = -7
2) ( x - 3 ) = ( - 2x - 4 )
2x + x = 3 - 4
x = -1
HP = { x = -1 , x = -7 }
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Materi : Konsep Mutlak
Bagian A
|4x + 5| = 8
1) ( 4x + 5 ) = 8
4x = 8 - 5
4x = 3
x = ¾
2) ( - 4x - 5 ) = 8
4x = - 8 - 5
4x = - 13
x = -13/4
HP = { x = ¾ , x = -13/4 }
Bagian B
|x - 6| - 9 = 3
1) ( x - 6 ) - 9 = 3
x - 15 = 3
x = 3 + 15
x = 18
2) ( - x + 6 ) - 9 = 3
x = - 3 - 3
x = -6
HP = { x = 18 , x = -6 }
Bagian C
|x - 3| = |2x + 4|
1) ( x - 3 ) = ( 2x + 4 )
x - 3 = 2x + 4
2x - x = - 4 - 3
x = -7
2) ( x - 3 ) = ( - 2x - 4 )
2x + x = 3 - 4
x = -1
HP = { x = -1 , x = -7 }
Semoga bisa membantu