tolong dong jawab nomor 1 sampai 3
Matematika
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Pertanyaan
tolong dong jawab nomor 1 sampai 3
1 Jawaban
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1. Jawaban ErikCatosLawijaya
Materi : Persamaan Mutlak
Pembahasan :
|x + 2| = 5
x + 2 = 5
x = 5 - 2
x = 3
x + 2 = -5
x = -5 - 2
x = -7
Hp : {-7 , 3}
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|x - 3| = 10
x - 3 = 10
x = 10 + 3
x = 13
x - 3 = -10
x = -10 + 3
x = -7
Hp : {-7 , 13}
————————————————
|3x - 5| = 3
3x - 5 = 3
3x = 3 + 5
3x = 8
x = 8/3
3x - 5 = -3
3x = -3 + 5
3x = 2
x = 2/3
Hp : {2/3 , 8/3}