Question

does anyone know how to solve (1+tanx)(tan2x)=2tan/1-tanx?

Answer 1

{tan = (1/2)*tan2x-(1/2)*tan2x*tanx^2, tan2x = tan2x, tanx = tanx}

Answer 2

sub tan2x for 2tanx/(1-tan^2x) then factor (1-tan^2x) to (1+tanx)(1-tanx) cross out then your good