Tan 2 × - tan × - 2 = 0?

Mungkin maksud soal bgini..
tan² x - tan x - 2 = 0

tan² x - tan x - 2 = 0
(tan x - 2)(tan x + 1) = 0
tan x - 2 = 0
tan x = 2
tan x = tan 63,43°
x = 63,43° + kπ

atau

tan x + 1 = 0
tan x = -1
tan x = tan 135°
x = 135° + kπ

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Nilai x yg memenuhi :
x = 63,43° + kπ
atau
x = 135° + kπ