Berapa jawaban dari soal mutlak tersebut... Tolong bantu jawab.... [2X+1] < [x+3]

Question

Matematika Diposting : 2017-10-15 Diupdate : 2017-10-31 wenianggraeni27

Pertanyaan

Berapa jawaban dari soal mutlak tersebut... Tolong bantu jawab....
[2X+1] < [x+3]

Answer 1

2x + 1 < x + 3
2x +1 - x < x + 3 - x
x + 1 - 1 < 3 - 1
x < 2
Hp = {x | x, < 2}

Answer 2

[2x + 1] < [x + 3]
(2x + 1)² < (x + 3)²
4x² + 4x + 1 < x² + 6x + 9
3x² - 2x - 9 < 0