Tolong jelaskan cara mengerjakan ini 5|2x-1|+4= 11
hendrisyafa
Pindahkan 4 ke ruas kanan 5 I 2x-1 I = 11-4 5 I 2x-1 I = 7 I 2x-1 I = kuadratkan kiri dan kuadratkan kanan karena ada nilai mutlak (2x-1)² = 4x²-4x+1 = ------------------------------------- x 25 100x²-100x+25 = 49 100x²-100x-24 = 0 ------------------------ : 4 25x²-25x-6 = 0 (5x+1) (5x-6) = 0 x = atau x =
5 I 2x-1 I = 11-4
5 I 2x-1 I = 7
I 2x-1 I =
kuadratkan kiri dan kuadratkan kanan karena ada nilai mutlak
(2x-1)² =
4x²-4x+1 =
------------------------------------- x 25
100x²-100x+25 = 49
100x²-100x-24 = 0
------------------------ : 4
25x²-25x-6 = 0
(5x+1) (5x-6) = 0
x = atau x =