Question

resolva: (x+2)² + (x-1).(x+3)= 3x (x+2)

Answer 1

x² +4x +4 + x² + 3x -x - 3 =3x² +6x
x² +4x +4 +x² + 3x -x -3 -3x² -6x = 0
-x² +1 =0
-x² = -1 .(-1)
x² = 1
x = √1