Find the function y = y ( x ) y = y ( x ) (for x > 0 x > 0 ) which satisfies the separable differential equation d y d x = 2 + 15 x x y 2 ; x > 0 d y d x = 2 + 15 x/x y^ 2 ; x > 0 with the initial condition y ( 1 ) = 3 y ( 1 ) = 3

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?