What would be the correct answer?

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?

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Me. i can't figure out this question. give an explanation too. .