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2radical20-3radical45-radical2(3radical18-2) plizz repede

Răspuns :

=4[tex] \sqrt{5} [/tex]-9[tex] \sqrt{5} [/tex]-18+2[tex] \sqrt{2} [/tex]=
2[tex] \sqrt{2} [/tex]-5[tex] \sqrt{5} [/tex]-18