1.|3X+4|=X-3 Tentukan Nilai Mutlak Nya ToloN Di jawab

Mapel : Matematika
Kelas : X SMA
Bab : Mutlak

Pembahasan :
Cara 1

|3x + 4| = x - 3

3x + 4 = x - 3
3x - x = -3 - 4
2x = -7
x = -7/2

3x + 4 = -x + 3
3x + x = 3 - 4
4x = -1
x = -1/4

Hp : {-7/2 , -1/4}

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Cara 2

|3x + 4| = x - 3
(3x + 4)² = (x - 3)²
(3x + 4)² - (x - 3)² = 0
(4x + 1)(2x + 7) = 0
x = -1/4
x = -7/2

Hp : {-7/2 , -1/4}