Question

x= √ 3+2 ; y=3 √2-4 Oblicz: x+y=? x-y? x*y=?

Answer 1

√3 + 2 + 3√2 - 4 = 1,73 + 3* 1,41 -2= 3,96    x + Y

 

√3 + 2 - 3√2 - 4 = 3,73 - 8,23= - 4,5  x - y

 

(√3+2) * (3√2 - 4) = 3√6 -4√3 + 6√2 - 8