Tolong kak bantuannya

x= 3

√7x+4 - √4x+13
-------------------------
2x^2 - x -15

√7(3)+4 - √4(3)+13
= ----------------------------
2(3^2) -3 -15

√21+4 - √12+13
=-----------------------
2(9) -18

5-5
= -------
18-18

= 0

maaf kalau salah
semoga membantu :)