Odpowiedzi

Najlepsza Odpowiedź!
2010-01-17T21:20:11+01:00
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
2 4 2