if its f(x), then rite side av "=" shood hav x's
how bout set x=root(t)
then yu hav -(4/3)x^2 +x -2=0
or -4x^2 +3x -6=0
or 4x^2 -3x +6=0
yer not gonna like this
zeroes...0.375 +-1.1659224 i (komplex numbers)
then tu get bak tu t, gotta take sq root av komplex numbers...beyond me