dik . x1+x2 = 5 .. dan x1.x2=3 .. berapa hasil dari 1/x1+1/x2 ?
Matematika
srirahayuagustina
Pertanyaan
dik . x1+x2 = 5 .. dan x1.x2=3 .. berapa hasil dari 1/x1+1/x2 ?
1 Jawaban
-
1. Jawaban DimasRaka
x1 + x2 = 5 → 3(x1 + x2) = 15
x1 . x2 = 3 → 5x1 . x2 = 15
3(x1 + x2) = 5x1 . x2
(x1 + x2)/(x1 . x2) = 5/3
x1/(x1 . x2) + x2/(x1 . x2) = 5/3
1/x2 + 1/x1 = 5/3
1/x1 + 1/x2 = 5/3