√25 + √45 + √245 —————————— √80
Matematika
hudzwazzhr
Pertanyaan
√25 + √45 + √245
——————————
√80
——————————
√80
1 Jawaban
-
1. Jawaban Anonyme
Bab Bilangan Irrasional
Matematika SMP Kelas IX
(√25 + √45 + √245) : √80 = (5 + 3√5 + 7√5) / (4√5)
= (5 + 10√5) / (4√5)
= (4√5) (5 + 10√5) / (4√5)²
= (20√5 + 40 x 5)/(16 x 5)
= (20√5 + 200)/80
= (√5 + 10)/4