Question

Tentukan himpunan penyelesaian dari persamaan berikut
1. [4-2x] = [4x]

Answer 1

Verified answer

|4-2x| = |4x|
-(4-2x) = 4x
-4 +2x= 4x
-2x= 4
x = -2

4-2x =4x
-6x = -4
x = 2/3

Hp = { -2,2/3}

Answer 2

Verified answer

Nomor 1
| 4 - 2x | = | 4x |
(4 - 2x)² = (4x)²
16 - 16x + 4x² = 16x²
4x² - 16x² - 16x + 16 = 0
-12x² - 16x + 16 = 0
-4(3x² + 4x - 4) = 0
3x² + 4x - 4 = 0
(3x - 2)(x + 2) = 0
x = ⅔ dan x = -2

HP {⅔ , -2}

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