Find the measure of each missing angle.

The triangles are similar. what is the value of x? show your work.

Through non-collinear points there is exactly one plane.

Answer asap! show all work! find the number of complex roots, the possible number of real roots and the possible rational roots of the polynomial function. then, solve for all roots. x^3 + 2x^2 + 3x + 6 = 0