*2+x-5x= *(x+3)²= *2x+4=

2+4x
maaf kalo salah,semoga bermanfaat

*x = 2
* x2 + 6x +9
* x = -2

cara :
* 2 + ( x - 5x ) = 2 + ( - 4x )
- 4x = - 2
x = 2
* ( x + 3 ) × ( x + 3 ) = x2 + 3x + 3x + 9
= x2 + 6x + 9
* 2x = - 4
x = - 2