jika diskriminan persamaan kuadrat 2xkuadrat-9x+c=0 adalah 121 maka hitung nilai c

2x^2 - 9x + c = 0
a = 2 ; b = -9 ; c = c

D = b^2 - 4(a)(c)
121 = (-9)^2 - 4(2)(c)
121 = 81 - 8c
40 = -8c
c = -5

Bab Persamaan Kuadrat

a = 2
b = -9

Diskriminan = b^2 - 4ac
121 = (-9)^2 - 4(2)(c)
121 = 81 - 8c
81 - 8c = 121
81 - 121 = 8c
8c = -40
c = -5