hitung dan sederhanakanlah! 1. (3√2+2√3) . (3√2-2√3) 2. 4√7 . 3√28 3. 5(3√5 + √50) jawab

Bab Bilangan Irrasional
Matematika SMP Kelas IX

1] (3√3 + 2√3) (3√2 - 2 √3)
= (3√3)² - (2√3)²
= 27 - 12
= 15

2] 4√7 . 3√28
= 12 √196
= 12 . 14
= 168

3] 5 (3 √5 + √50)
= 15 √5 + 5 . 5√2
= 15√5 + 25√2