sederhanakan bentuk a²- b² untuk a = 1/3-√2 dan b = 1/3+2√2 pliss bantuin

a² - b².
= (1/3 - √2)² - ( 1/3 + 2√2)²
= (1/9 - 2) - (1/9 + 4× 2)
= - 17/9 - 73/9
=-90/9 = -10.

insaallah bener

a² - b² = (a + b) ( a - b)
           = [(1/3 - √2) + (1/3 + 2√2)] [(1/3 - √2) - (1/3 + 2√2)]
           = [ 2/3 + √2] [3√2]
           = 2√2 + 3 × 2
           = 2√2 + 6
          
hasilnya = 6 + 2√2