What do the answer to this question

X2-13x+36

X2 + 13x + 36 = 0

36 + 13x + x2 = 0

(9 + x) (4 + x) = 0

9 + - 9 = 0 0 + x = 0 + - 9 x = 0 + - 9

x^2 - 13x + 36 =

(x - 9) (x - 4) = 0

4² - 13 (4) + 36 = 0

16 - 52 + 36 = 0

-36 + 36 = 0

0 = 0

9² - 13 (9) + 36 = 0

81 - 117 + 36 = 0

-36 + 36 = 0

0 = 0

So the Answer Is x = 9, 4