Question

|2x-7| = |3x+1|
Tolong dibantu hasilnya berapa, aku bingung sama nilai mutlak

Answer 1

Kuadratkan kedua ruas
(2x-7)^2 = (3x+1)^2
4x^2 -28x + 49 = 9x^2 +6x +1
5x^2 + 34x - 48 = 0
(5x - 6)(x+8) = 0
5x-6 = 0
x = 6/5

atau

x+8 = 0
x = -8