Matematika

Pertanyaan

Nilai x dari persamaan:
| 4-3x | =| -4 |

Dijawab yahh ... please

2 Jawaban

  • 4-3x = 4
    -3x = 0
    x = 0

    atau
    (4-3x)² = 4²
    (4-3x)(4-3x)= 16
    16-24x-9x²= 16
    -24x-9x²=0
    (3x-0)(3x-8) = 0
    3x= 0
    x= 0

    3x-8=0
    3x = 8
    x =8/3
  • [tex]\text{Materi : Nilai Mutlak}\\\text{Kelas : X SMA}\\\\\boxed{\boxed{\,\text{PEMBAHASAN}}}\\\\|4 - 3x| = |-4|\\|4-3x| = 4\\(4-3x)^2 = 4^2\\(4-3x)^2 - 4^2 = 0\\(4+4-3x)(4-4-3x)=0\\(8-3x)(-3x)=0\\9x^2 - 24x = 0\\3x^2 - 8x = 0\\3x(x - 8) = 0\\x = 0\\x = 8\\\\\text{Hp :}\,\ (0,8)\\\\\text{By : Guru MIPA}[/tex]

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