hp nilai mutlak dari[x+4]+4=9

Materi : Persamaan Mutlak

Pembahasan :
|x + 4| + 4 = 9
|x + 4| = 9 - 4
|x + 4| = 5
(x + 4)² = 5²
(x + 4)² - 5² = 0
(x + 4 + 5)(x + 4 - 5) = 0
(x + 9)(x - 1) = 0
x = -9
x = 1

Hp : {-9 , 1}

(x + 4) + 4 = 9
x + 4 = 5
x = 1

x + 4 = -5
x = -9

HP = {-9, 1}


Semoga Membantu!!!