Answer:
see below
Step-by-step explanation:
(3x−2)(x+4)=0
factor left side
3x^2+12x-2x-8=0
3x^2+10x-8=0
+8 both sides
3x^2+10x=8
-10x both sides
3x^2=8-10x
/3 both sides
x^2=(8-10x)/3
/x both sides
x=(8-10)/3= -2/3