Angular directive how to get value of selector.

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?

Which shows the correct substitution of the values a, b and c from the equation 1=-2x+3x^2+1

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39