Question

Nilai nilai m agar persamaan kuadrat (m-5)x² - 4mx + (m-2) = 0 mempunyai akar akar positif adalah ...

Answer 1

B^2-4ac
(-4m)^2 - (4) (m-5) ( m-2)
16m^2 - (4) (m^2-7m+10)
16m^2 - 4m^2 + 28m -40
12m^2 + 28m -40
6m^2 + 14m -20
3m^2 + 7m -10
(3m +10) (m -1)
m= -10/3  l  m=1

nilai m = 1

mav kalo salah ea,.