Jawapan

2016-10-05T23:05:40+08:00
X²-5(x-1)-(x-4)
=x²-5x+5-x+4
=x²-6x+9
=(x-3)(x-3)
=(x-3)²
Kenape x-1 bertukar menjadi x+5?
-5(x-1)...pecahkan...-5 darab x = -5x... -5 darab -1 = 5
okk thanks
2016-10-06T15:02:20+08:00
I have provided u the solution down there...take a look and check !
nice thanks
-6x -x it should be 6x right ! Why?
Nope...it is 7x
- 5x - x = - 6x