Question

1.Tentukan HP Dari
a) | 4 X - 5 | = 11
b) | X - 3 | = | 2 X + 5 |

Please Help Me

Answer 1

A)
|4x - 5| = 11

4x - 5 = 11
4x = 16
x = 4
atau
4x - 5 = -11
4x = -6
x = 

b)
|x - 3| = |2x + 5|
(|x - 3|)² = (|2x + 5|)²
x² - 6x + 9 = 4x² + 20x + 25
3x² + 26x +16 = 0
(3x + 2)(x + 8)
x = - atau x = -8