Question

Usuń niewymienieni z mianownika
a) 1/√2
b) 2x/√3
c) -√3/√5
D) X+1/√6
E) 1/√2 -1

Answer 1

A) 1/√2=√2/2

b) 2x/√3=2x√3/3

c) -√3/√5=-√3·√5/5=-√15/5

D) X+1/√6=(X+1)·√6/6=(X√6+√6)/6 

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

Answer 2

a)
1/√2 * √2/√2 = √2/2
b)
2x/√3 * √3/√3 = 2x√3/3
c)
 -√3/√5 * √5/√5 = -√3√5/5 = -√(3*5)/5
D)
(X+1/√6) = (x√6 + 1)/√6 * √6/√6 = (x√6 + 1)√6/6
E)
1/√2 -1 = 1/√2 * √2/√2 - 1 = √2/2 - 1