Can someone please help with either? will mark brainliest

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?

Add the fractions and simplify 1/2+ 1/3

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120