Anumber can be written as a ratio of two integers in the form a/b where b ≠ 0.

Can someone me do math because i am having a breakdown rn because i don’t get it

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?

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if