Question

Usuń niewymiernosc z mianownika
a) 4/pierwiastek z 2 -1 =

Answer 1

4/√2-1*√2+1 nad √2+1 = 4√2-4 nad 2-1 = 4√2-4=4(√2-1)

Answer 2

4
----- =
√2-1
4√2+4
-------=
2-1

4√2+4

Answer 3

4/√2-1=4(√2-1) / ( √2-1)( √2+1) = 4√2-4 / 1=4√2-4