Assuming you want to expand the equation:
Foil the equation (first, outer, inner, last).
First:
x*3x= 3x^2
Outer:
x*-4=-4x
Inner:
-2*3x=-6x
Last:
-2*-4=8
Put it all together and simplify like terms.
3x^2-4x-6x+8
3x^2-10x+8
Final answer: 3x^2-10x+8
If you want root, apply the Zero Product Property.
(x-2)=0
x=2
(3x-4)=0
3x=4
x=4/3
Final answer: x=2, x=4/3
