Tentukan besarnya diskriminasi(D) dari persamaan berikut :
[tex]\colorbox{aqua}{\colorbox{pink}{\color{navy}{\boxed{\displaystyle\bf~D~=~ {b}^{2} - 4ac }}}}[/tex]
︶꒦꒷♡꒷꒦︶︶꒦꒷♡꒷꒦︶︶꒦꒷♡꒷꒦︶︶꒦꒷
- Bagian a
x² + 5x + 6 = 0
a = 1
b = 5
c = 6
D = b² - 4ac
= 5² - 4.1.6
= 25 - 24
= 1
︶꒦꒷♡꒷꒦︶︶꒦꒷♡꒷꒦︶︶꒦꒷♡꒷꒦︶︶꒦꒷
- Bagian b
x² - 3x + 5 = 0
a = 1
b = -3
c = 5
D = b² - 4ac
= (-3)² - 4.1.5
= 9 - 20
= -11
︶꒦꒷♡꒷꒦︶︶꒦꒷♡꒷꒦︶︶꒦꒷♡꒷꒦︶︶꒦꒷
- Bagian c
2x² - 12x + 12 = 0
a = 2
b = -12
c = 12
D = b² - 4ac
= (-12)² - 4.2.12
= 144 - 96
= 48
︶꒦꒷♡꒷꒦︶︶꒦꒷♡꒷꒦︶︶꒦꒷♡꒷꒦︶︶꒦꒷
