Can someone tell me if this is right or not?

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?

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4