a) ( √3-√4) (1+√2) = √3 - √4 + √6 - √8 = √3 - 2 + √6 - 2√2 = √6 + √3 - 2√2 - 2
b) (√3+√2) × √2 = √6 + √4 = 2 + √6
c) ( 3+√2) ( 1+√2) = 3 + √2 + 3√2 + √4 = 3 + 4√2 + 2 = 5 + 4√2
d) ( √8+√2) ( 1+√2) = √8 + √2 + √16 + √4 = 2√2 + √2 + 4 + 2 = 3√2 + 6
e) ( -√3+√2) ( 1+√2) = - √3 + √2 - √6 +√4 = 2 +√2 - √3 - √6
f) ( √3-√15) ( 1+√5) = √3 - √15 + √15 - √75 = √3 - 5√3 = - 4 √3
g) ( 2√3 -√2) ( 3-√2) = 6√3 - 3√2 - 2√6 + √4 = 2 - 3√2 + 6√3 - 2√6