The measure of angle qpr = degrees

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?

Which of the following is the shape of a cross section of the figure shown below

1/2+1/6-3/4 simplify the given expression leaving the answer in improper fraction form.