Question

hola, me ayudan pls :( ¿Cuál(es) de las siguientes ecuaciones es (son) incompleta(s)?
1) x2 + 5x - 7 = 0
II) 3x2 – 5 = 0
III) (x – 6)2 = -12x

Answer 1

1. x2 + 5x - 7 = 0

x2 + 5x - 7 = 0

2x + 5x - 7 = 0

7x - 7 = 0

7x = 0

x = 1

2. 3x2 - 5 = 0

3x2 - 5 = 0

6x - 5 = 0

6x = 5

x = 5/6

3. (x - 6)2 = -12x

(x - 6)2 = -12x

2x - 12 = -12x

2x + 12x = 12

14x = 12

x = 6/7

$Besitos OvO$