tolonggggggg kakakk bantu jawaab yaa kak (pake cara ya) makasiihh

1. x² - 4x = 0
x (x - 4) = 0 --> x1 = 0

x - 4 = 0 --> x2 = 4

2. x² - 4 = 0
x² = 4 --> x = 2

3. x² + 4x + 5 = 0
ga ketemu x nya

4. x² + 4x - 5 = 0
(x -1) (x + 5) = 0
x - 1 = 0
x1 = 1

x + 5 = 0
x2 = -5