Są to zadania z działu liczb i działań 1. √32+5√2-√18 2. √16³-√54³+√2³ 3. 1+√2:3√2

1. √32+5√2-√18= = √16*√2 + 5√2 -√9*√2= = 4√2 + 5√2 -3√2 = = 6√2 2. √16³-√54³+√2³ = = √16²*√16 - √54²*√54 + √2²*√2= = 16*4 - 54*√9*√6 + 2*√2= = 64 - 54*3*√6 + 2√2= = 64 - 162√6 + 2√2= = 2( 32 - 81√6 + √2) 3. 1+√2:3√2 = = (1 + √2) : (3√2) = = [(1 + √2) : (3√2)]*[√2 :√2] usuwam niewymierność mianownika = [(1 + √2)*√2 ] : 3*2 = ( √2 + 2) : 6 = (1/6)√2 + 2/6= = (1/6)√2 + 1/3