Question

Selesaikan persamaan berikut dengan cara aljabar |x-4|-2=7

Answer 1

Verified answer

|x-4|=7+2
x-4 = 9
x = 13
atau
x-4 = -9
x = -5
x = (-5,13}

Hp ={-1,13}

Answer 2

Verified answer

Materi : Nilai Mutlak
Bahasan : Persamaan Nilai Mutlak
Jawaban : x = 13 atau x = - 5

Langkah - langkah :
|f(x)| = a, ⇒ f(x) = a atau f(x) = - a
|x - 4| - 2 = 7
|x - 4| = 7 + 2
|x - 4| = 9
⇒ x - 4 = 9
x = 9 + 4
x = 13

⇒ x - 4 = - 9
x = - 9 + 4
x = - 5