Solve each higher degree equation by factoring. The answers are suppose to be 0,-12, -1/2

Question

2x^4+25x^3+12x^2=0

Answer 1

First factor out the common factor x² to get:
x²(2x²+25x+12) = 0
The factor the quadratic to get:
x²(2x+1)(x+12)=0
Can you take it from here?