Jawaban PTS Math Ganjil Kelas X
Ruben Valentino Hasibuan/24/ X IPA 1 1.|2x-7| = 3 2x - 7 = 3 , 2x - 7 = -3 x = 5 , x = 2 2. | 2x - 1 | = | x + 4 | (2x-1)² = (x+4)² (2x-1)² - (x+4)² = 0 (2x-1 + x+4)(2x-1 - (x+4)) = 0 (3x + 3)(x - 5) = 0 3x + 3 = 0 atau x - 5 = 0 3x = -3 x = 5 x = -3 : 3 x = -1 3. | x + 7 / 2x - 1 | = 2 x + 7 / 2x -1 = 2 , x + 7 / 2x - 1 = -2 x = 3 , x = -1 4. 2 | -2x -2 | -3 = 13 2 |-2x -2 | = 13 + 3 | -2x -2 | = 16/2 | -2x -2 | = 8 -2x -2 = 8 , -2x -2 = -8 x = -5 , x = 3 5. | 4x + 2 | ≥ 6 4x + 2 ≥ 6 , 4x + 2 ≤ -6 x ≥ 1 , x ≤ -2 6. |3x+2|²+|3x+2|-2=0 p² + p – 2 = 0 (p+2)(p-1) = 0 p + 2 = 0 p = -2 (nilai mutlak tidak negatif ) atau p-1 = 0 p = 1 |3x + 2| = 1 => 3x + 2 = 1 3x = 1 - 2 3x = -1 x = -1/3 ...






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