Answer:
1.
x² + 5x = 0
x × (x+5) = 0
x = 0 , x + 5 = 0
x = 0 , x -5
2.
7x² + 21x = 0
7x × (x+3) = 0
x × (x+3) = 0
x = 0 , x + 3 = 0
x = 0 , x = -3
3.
16x² = 12x
4x² = 3x
4x² - 3x = 0
x× (4x - 3) = 0
x = 0 , 4x - 3 = 0
x = 0 , x = 3/4
4.
-4x = 6x
2x² = - 3x
2x² + 3x = 0
x × (2x + 3) = 0
x = 0 , 2x + 3 = 0
x = 0, x = -3/2
5.
x² + 8x + 12=0
x² + 6x + 2x + 12 = 0
x × (x+6) + 2x + 12 = 0
x × (x+6) + 2 (x + 6) = 0
(x+6) × (x+2) = 0
x + 6 = 0 , x + 2 = 0
x = -6 , x + 2 = 0
x = -6 , x = -2
Step-by-step explanation:
Correct me if I'm wrong :)
Weyt lang ang iba <3
