Answer:
5 or -2
Step-by-step explanation:
simplify this to make it easier.
[tex]x^{2} +2x-2x-4=3x+6\\[/tex]
then combine like terms
[tex]x^{2} -4=3x+6[/tex]
now move everything over to the right
[tex]x^{2} -3x-10=0[/tex]
then if you factor it, you get
[tex](x-5)(x+2)[/tex]
x can equal 5 or -2
