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Bonjour j'aurais besoin aide si vous plaît
Multiply the numerator and the denominator by à common irrational number,in order to obtain an équivalent fraction un which the denominator is rational
À=1/√3 :B=1/√2-1 : C=√2+1/√5-√3 :D=1/√2+1 + 1/√3+√2+1/√4+√3
Merciii d'avance


Répondre :

hello !!

It is enough to do the conjugate expression

A=1/
√3
A=1/√3(√3/√3)
A=√3/3

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

C=(√2+1)/(√5-√3)
C=(√2+1)(√5+√3)/(√5-3)(√5+√3)
C=(√10+√6+√5+√3)/5-3
C=(√10+√6+√5+√3)/2

i let you do the others