Question

Tolong ya teman2 udh ga tau lagi nih pake cara

Answer 1

Verified answer

Kelas 9 Matematika
Bab Akar dan Pangkat

25] (√2)/(√7 - √5)
= (√2)/(√7 - √5) . (√7 + √5)/(√7 + √5)
= (√14 + √10)/(√7² - √5²)
= (√14 + √10)/(7 - 5)
= (1/2) . (√14 + √10)

26] (6√10)/(√5 + √2)
= (6√10)/(√5 + √2) . (√5 - √2)/(√5 - √2)
= (6√50 - 6√20)/(√5² - √2²)
= 6 (√25 . √2 - √4 . √5)/(5 - 2)
= 2 (5 √2 - 2 √5)
= 10√2 - 4√5