Question

Tolong dijawab bagi yg merasa Jenius dlm Mate mika

Answer 1

Verified answer

1)
|x - 1| = 2..................|x - 1| = -2
x - 1 = 2................... x - 1 = -2
x = 2 + 1...................x = -2 + 1
x = 3.........................x = -1

HPnya adalah {-1 , 3}

2)
|x + 4| = 5...............|x + 4| = -5
x + 4 = 5...................x + 4 = -5
x = 5 - 4....................x = -5 - 4
x = 1............................x = -9

HPnya adalah {-9 , 1}

3)
|2x - 3| = 5................|2x - 3| = -5
2x -3 = 5......................2x - 3 = -5
2x = 5 + 3...................2x = -5 + 3
2x = 8.........................2x = -2
x = 8/2.........................x = -2/2
x = 4.............................x = -1

HPnya adalah {-1 , 4}

4)
|3 - 2x| = 7....................|3 - 2x| = -7
3 - 2x = 7......................3 - 2x = -7
-2x = 7 - 3......................-2x = -7 - 3
-2x = 4...........................-2x = -10
x = 4/-2.............................x = -10/-2
x = -2.................................x = 5

HPnya adalah {-2 , 5}

5)
|2x - 5| = -3

(Tidak terdefinisi karena harga mutlak,nilainya selalu positif bukan negatif)