Question

3(x-8)(5+x)=0помогите

Answer 1

3*(х-8)*(5+х)=0
3х-24*5х=0
3х-120х=0
х=117
х=0:170
х=0

Answer 2

3(X-8)(5+X)=0
1) 3(8-8)=3*0=0 
2) (5+8)=130*13=0.
Ответ:Х=8