Please help!

P. S. I've already tried it once and the answer isn't -0.3 repeating

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?

In the geometric progression –3, 12, −48… what term is 3,072?

Which is the graph of this function 3 square root of x plus one if