7. 8x - 4= 4(2x + 1) have how many solutions

How do i do this activity, is appreciated

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?

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out