Find the solutions of the following quadratic equations by graphing

The chart below shows the distribution of weeds in yard

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?

Hey am have account in but wished to create an account here you guys will me with my make new friends of uk !