[a] = √3 [b] = 1 dan [a-b] = 1 Tentukan a + b =........

jika |a| = √3, |b| = 1 dan |a - b| = 1

maka |a - b|² = (a - b)(a - b) = 1
|a|² - 2a•b + |b|² = 1
3 - 2a•b + 1 = 1
a•b = 2 ✔️

|a + b|² = (a + b)(a + b)
= |a|² + 2a•b + |b|²
= 3 + 2 + 1
= 6 ✔️

maka (a + b) = √6 ✔️

semoga jelas dan membantu