jika x1 dan x2 adalah akar akar 2x^2-10x+4=0,maka nilai 4/x1+4/x2

Kelas 10 Matematika
Bab Persamaan Kuadrat

2x² - 10x + 4 = 0
a = 2; b = -10; c = 4

4/x1 + 4/x2
= (4 . x2 + 4 . x1)/(x1 . x2)
= 4 (x1 + x2)/(x1 . x2)
= 4 . (-b/a)/(c/a)
= 4 . (-b/c)
= 4 . (-10/4)
= -10