The polynomial given below has roots? 2x^2+3x-2a: two positive  b: two negativec: one positive and one negative  d: two complex

The answer is c
Two positive and two negative

X=( -b+/- √(b²-4ac))/(2a)
x=(-3+/- √(3²-4*2*(-2))/(2*2)= (-3+/-  √(9+16))/4
x(1)=(-3+5)/4=2/4=1/2
x(2)=(-3-5)/4=-2

C: one positive and one negative