Ada gak orang pinter MTK di brainly?
Jawab:
Penjelasan dengan langkah-langkah:
nilai mutlak
soal
|3x – 4| – x = 5
|3x – 4| = x + 5
(3x – 4 + x + 5)(3x- 4- x – 5) = 0
(4x + 1)(2x – 9)= 0
8x² – 34x – 8 =0
x1 +x2 = – b/a
x1+ x2 = 34/8 = 17/4
cara lain definisi
i) -(3x- 4) – x = 5
-3x + 4 – x = 5
– 4x = 1
x= – 1/4
ii) 3x – 4 – x = 5
2x = 9
x = 9/2
x1 +x2 = - 1/4 + 9.2
x1+ x2 = 17/4