Write an equivalent expression for 36 x + 12

The parabola opens: y=√x-4 (principal square root) up down right left

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?

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*