solve the following equations a | 2x + 5 | = | x + 2 |

| 2x + 5 | = | x + 2 |
(2x+5)² = (x+2)²
4x² + 20x + 25 = x² + 4x + 4
4x² - x² + 20x - 4x + 25 - 4 = 0
3x² + 16x + 21 = 0
(3x+7)(x+3) = 0

3x+7 = 0
3x = -7
x = -7/3

x+3 = 0
x = -3

HP = {-3, -7/3}

(2x+5)^2 - (x+2)^2 =0
4x^2 + 20x + 25 -( x^2 +4x +4) =0
3x^2 + 16x + 21 = 0
(3x+7)(x+3) = 0 [difaktorkan]
x= -7 /3 atau x= -3