100 POINTS!! what are you gonna do mods, stomp on my charitable nature? LET THE PEOPLE HAVE POINTS!

The variable in a relation who’s value depends on the value of the independent variable is called what?

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?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).