Question

Himpunan penyelesaian |2x-6| - |X+4| = 0 adalah.....​

Answer 1

Nilai Mutlak

|2x - 6| - |x + 4| = 0

(2x - 6)² - (x + 4)² = 0

(2x - 6 + x + 4)(2x - 6 - (x + 4)) = 0

(3x - 2)(x - 10) = 0

x = 2/3 atau x = 10

HP = {2/3 , 10}