Решите уравнение 2+3х(х+1)=8

Question

Решите уравнение 2+3х(х+1)=8

Answer 1

2+3х(х+1)=8
2+3х*х+3х=8
3х*х+3х-6=0
Д=9+6*4*3=9+72=81=9*9
х= -3+-9/6
х=-2
х=1/2

Answer 2

2+3х(х+1)=8
2+4х+3х=8
4х+3х=8-2
7х=6
х=6/7(дробью)