Please help me with this task if you can!! Show work if possible!

The sum of two numbers is 86, and their difference is 20. find the two numbers

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?

What is the equation of a line passing through (-6,5) and having a slope of 1/3