Given f(x) = x^3 - 2x^2 - x + 2, the roots of f(x) are

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?

Do you mind if you guys me with this question i’m on number 8

Twice the sum of a number and 2 is equal to three times the difference of the number and 8. find the number.