2.3b Cari Hasil Tambah Punca (HTP) dan Cari Hasil Darab Punca (HDP) bagi suatu Persamaan Kuadratik
![](https://3.bp.blogspot.com/-6aBRPzWG4Ts/VzyCWMoPqLI/AAAAAAAADN4/8lixaiOHgI4Ar1fUXYMt14ua_mT8B29xwCLcB/s400/Picture5.png)
Contoh:
Cari hasil tambah punca dan hasil darab punca bagi persamaan yang berikut:
(a) x
2 + 7x
– 3 = 0
(b) x
(x – 1) = 5 (1 – x)
Penyelesaian:
(a) x
2 + 7x
– 3 = 0
a
= 1, b = 7, c = –3,
(b)
x
(x
– 1) = 5 (1 – x)
x
2
– x = 5 – 5x
x
2
– x – 5 + 5x
= 0
x
2
+ 4x – 5 = 0
a
= 1, b = 4, c = –5,