6.) You are standing 50 meters from a hot air balloon that is preparing to take off. The angle of elevation to the top of the
balloon is 28'. Find the height of the balloon.

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?

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Asap! i'm not good math and i'm lost.