Can someone please help ASAP?

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

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?

Divide. write in the simplest form. 4 1/6 divided by 10