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29. Efectuați calculele: 15√7 +31-41√3+5[2√7 +3(3√3-√7)]}; b) 12√3 − 7{8√2 −4[5√3+3(4√2-3√3)]:8}; c) 5√3+3{4√² +4[3√3+2(√3−3√2)]: 20)-2√2 5 d) √32-[96-[√126-√8 (√63+√28)]}-√2 (22√14+372)​

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