Question

2 |3x-8| = 10
tentukan nilai x???

Answer 1

Verified answer

2 |3x-8| = 10
|3x-8| = 5

a. |3x-8| = 5
    3x = 5 + 8
    3x = 13
      x = 13/3

b. |3x-8| = -5
    3x = 3
      x = 1

HP : { x = 13/3 atau x =1}

Answer 2

Verified answer

Bab Nilai Mutlak
Matematika SMA Kelas X

2 |3x - 8| = 10
|3x - 8| = 10 : 2
|3x - 8| = 5

(3x - 8)² = 5²
(3x - 8)² - 5² = 0
(3x - 8 + 5) (3x - 8 - 5) = 0
(3x - 3) (3x - 13) = 0
3x - 3 = 0 atau 3x - 13 = 0
3x = 3              3x = 13
x = 1                x = 13/3

HP = {1, 13/3}