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Ajutor la ex 10 cu rezolvare completa.

Ajutor La Ex 10 Cu Rezolvare Completa class=

Răspuns :

-8/(2√5+3√2)+26/(3√5+4√2)-8/(4√5+6√2)=
=-8(2√5-3√2)/(2√5+3√2)(2√5-3√2)+26(3√5-4√2)/(3√5+4√2)(3√5-4√2)- -8(4√5-6√2)/(4√5+6√2)(4√5-6√2)=
=-8(2√5-3√2)/(20-18)+26(3√5-4√2)/(45-32)-8(4√5-6√2)/(80-72)=
=-8(2√5-3√2)/2+26(3√5-4√2)/13-8(4√5-6√2)/8=
=-4(2√5-3√2)+2(3√5-4√2)-(4√5-6√2)=
=-8√5+12√2+6√5-8√2-4√5+6√2=
=10√2-6√5