Perpendicular to y = 3x + 4 through (0, -2)

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 3, 4+2i, 1+(sqrt)7 the answer is supposed to be: f(x)=x(^5)-13x(^4)+60x(^3)-82x(^2)-144x+360 what am i doing wrong?

Me i'm timed right now! there's 4 answer

The slope of the line whose equation is 3y = 2x - 3 is 2 2/3 3/2