Respuesta :

Answer:

1.x=0, –10

2.x=3, 4

Step-by-step explanation:

1.

x(x+10)=0===> x=0, –10

2.

x²–3x–4x+12===> x²–7x+12=0

(x–3)(x‐4)=0====> x=3, 4