Odpowiedź:
1/(√3-1) = 1*(√3+1) /(√3-1)(√3+1)= (√3+1)/ (3-1)= (√3+1)/2
7/(5+√6)=7*(5-√6)/(5+√6)(5-√6)=7 ( 5-√6)/(25-6)= 7(5-√6)/21=(5-√6)/3
√5/(3√5-4)=√5*(3√5+4)/(3√5-4)(3√5+4)=(15+4√5)/(45-16)=
= (15+4√5)/29
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Odpowiedź:
1/(√3-1) = 1*(√3+1) /(√3-1)(√3+1)= (√3+1)/ (3-1)= (√3+1)/2
7/(5+√6)=7*(5-√6)/(5+√6)(5-√6)=7 ( 5-√6)/(25-6)= 7(5-√6)/21=(5-√6)/3
√5/(3√5-4)=√5*(3√5+4)/(3√5-4)(3√5+4)=(15+4√5)/(45-16)=
= (15+4√5)/29
Szczegółowe wyjaśnienie: